Qualcomm imei repair diag mode - You guys must backup efs.

 
Restore QCN File With UMT Dongle. . Qualcomm imei repair diag mode

Go to the Gsmatoztool. for new phones with SD 845, 710, 660, 639. Find the option &39;Port Check Test&39;, and set it to &39;Enabled&39;. jpg (143. STEP 7 ChangeRepairFix IMEI on Qualcomm. Qualcomm Diag Mode IMEI repair Tool. To confirm, you go back to device manager. For you to enable diag mode, your phone needs to be rooted. You should have an entry like Qualcomm HS-USB Android DIAG 901D in device manager. How To Enable Diagnostic (Diag) Mode In Qualcomm Mobile via adb commands. I&39;ll just copy it here; setprop sys. Not sure how I managed to get the Qualcomm ANDROID Diag to show up (The exact interface driver that showed up was Qualcomm HS-USB Android DIAG 901D) it just magically appeared after trying to. config rndis,diag,adb" At this time, if you installed the Qualcomm Drivers, your device manager should have a port similar to "Qualcomm HS-USB Diag". Download and extract the QualcommSmartphoneWriteIMEIToolCredit XDA Member text1 to any convenient location on your PC. Now, you're going to run this command to boot into diag mode. Thank you very much and sorry for my bad English , i'm so frenchy. 12-26-2020, 1644. Tick imei 1 and imei 2 and write imeis then click write qcn and select qcn. If this does not work, then try the second method. Open up "QPST Configuration" which was installed earlier. Note Some times qcn backup and restore can solve yur unknwn baseband imei issues. Oppo & Vivo Tutorial Nvram Oppo F5 Fix imei -baseband-sinyal oppo f5. Open the WriteIMEI. 7Reboot Phone. ok so in pretty much 100 of all tutorials in fixing a imeiefs problem it stems on putting phone into "diag or diagnostic" mode which EFS Pro will do for you, or you can 0808 BUT i to get the "unkown" device too. Search Qualcomm Mdm 9307 Unlock. Note Some times qcn backup and restore can solve yur unknwn baseband imei issues. Not Found Port COM110 Qualcomm HS-USB Android DIAG 901D (COM110) Compile Jun 29 2018 205111 Release Jun 21 2018 080000 Hw. You also need to have installed your Qualcomm USB drivers. Select Write IMEI1 (if you have dual SIM device then also select Write2 option) and click on OK button. Bypass APK ; Download Qualcomm USB Driver Latest Setup Update 2022. Write Security patch > phone in Fastboot Mode > Qualcomm tab > XWriter >Select XML "File in Core Data -Modems". apk" from Google Chome (the app not available in Play Store). Dear Viewers. Run Software download from qpst nd there press backup to get yur qcn backup, Also you can restore qcn by same procedure. 0 & enable DIAG MODE. I have flash my XPERIA XZ1 and i have lost my IMEI. com CM2SP2 Diag Helper tool v1. I&39;ll just copy it here; setprop sys. The display is perhaps small for the users standards. Feb 13, 2020 &183; Repair imei Mi Note 5 Without Unlock Bootloder (Test Point) 1 TEST POINT. How to use ADB to enable & disable Diagnostic (DIAG) mode on Qualcomm Hovatek 29. 12-26-2020, 1644. I&39;ll just copy it here; setprop sys. phone imei1 0- and imei2 0- phone no network no amerngency call. Code Tool work with Diag FTM (for zte) Mode Support many Qualcomm devices Autodetect Diag Com Port or manual enter number of Diag Com Port. Dial 717717 to enable diag mode. Apr 14, 2022 Click on the Settings button and enter ustest to Login. Open up "QPST Configuration" which was installed earlier. Send Diagnostic Password (16 Digits Hex) to unlock secure. how to invalid imei qualcomm imei repair how to tie a tie port qualcomm qualcomm diagnostic port driver qualcomm diagnostic mode qualcomm diag port code . Repair IMEI OnePlus Method Xiaomi RSA Devices Repair IMEI (ADB Diag Mode) Repair MEID (Diag Mode) Repair ESN (Diag Mode) Read & Write QCN (Diag Mode) Patch, Write IMEI inside QCN Screen Locks Security Red Pattern (EDL Mode - Encrypted UserData Not Supported) Remove Locks Without Data Loss (EDL Mode - Encrypted UserData Not Supported). config diag,adb alright then you tap enter so that is going to enable diag mode. Then click on write IMEI. Thank you very much and sorry for my bad English , i'm so frenchy. Step-1 Download the IMEI WriterTool and install the correct USB Driver is installed, Step-2 Now connect your Android Device to the PC using the USB data cable. Not sure how I managed to get the Qualcomm ANDROID Diag to show up (The exact interface driver that showed up was Qualcomm HS-USB Android DIAG 901D) it just magically appeared after trying to. Thank you very much and sorry for my bad English , i'm so frenchy. Read Information. Enable Qualcomm Diagnostic Mode Useful for Repair IMEI or Repair Baseband your phone using QPST or other tools. kn Amazon dq Apple AirPods 2 yh. Under the Device Manager, and select COM63 in Ports. Enable USB Debugging. Now, you have Enabled Or Disabled Diag Mode on Qualcomm device. Run Software download from qpst nd there press backup to get yur qcn backup, Also you can restore qcn by same procedure. 04 website. If this does not work, do the second way. View Details. config diag,adb alright then you tap enter so that is going to enable diag mode. phone imei1 0- and imei2 0- phone no network no amerngency call. If not keeping trying to re-enter diag mode and ensure the drivers are correct. If this does not work, do the second way. So, devices on other processors may not work if this guide is followed. Xiaomi Redmi S2 Diag Mode Enable Tutorial Diag mode driver enabling in qualcomm devices for network. Xiaomi Redmi S2 Diag Mode Enable Tutorial Diag mode driver enabling in qualcomm devices for network. Next, enable USB debugging on your Qualcomm device for this you can go to settings >> about phone>> and find out the Build Ver and click on it multiple times. Here we have shared the download link to download Qualcomm Smartphone Write IMEI Tool. config rndis,diag,adb" At this time, if you installed the Qualcomm Drivers, your device manager should have a port similar to "Qualcomm HS-USB Diag". Once the installation is complete, launch the CM2SP2 Diag. UMTv2 UMT Pro QcFire v6. Next, you can unzip all files at c drive (important) Ensure you have disabled the antivirus before running the installation. Once the installation is complete, launch the CM2SP2 Diag. We have a guide on how to root using magisk. Itel A22 Pro IMEI The Itel A22 Pro is a low-ranged budget device. IMEI Repair in FTMDiag Flash Mode. All qualcomm devices have diag connection mode , in this section we can access to efs,nvitems for write and. Enable USB Debugging. 7- Run QualcommSmartphoneWriteIMEI. Ultimate Guide Qualcomm Snapdragon imei and Baseband Repair. and try. 2nd Method ADB Mode Your Phone Must be Rooted. The display is perhaps small for the users standards. How to use ADB to enable & disable Diagnostic (DIAG) mode on Qualcomm · OPPO A57 Qualcomm Imei Repair Oppo A57 diag port code Emergenct Call. Qualcomm CPU IMEI repair new trick full working and tested by devji mobile repairing. If not keeping trying to re-enter diag mode and ensure the drivers are correct. Attached Images. Samsung A205F U9 restore orginal imei (in twrp mode) Samsung A205F U9 Restore Original IMEI. corrupted IMEI on Qualcomm Snapdragon devices. exe Click on the Settings button and enter ustest to Login Select Write IMEI1 (if you have dual SIM device then also select Write2 option) and click on OK button Connect your device and select the COM Port as USB and Enter the IMEI number in the space provided. Added - Xiaomi, Huawei, Oppo Tab (For Specific and special Functions) Added - Driver information. Qualcomm diag connection mode protocol source code and Qcn patcher About Source code All qualcomm devices have diag connection mode , in this section we can access to efs,nvitems for write and reading this source code is using QMSLMSVC10R. Start QPST Configuration (Note Right click and "Run as administrator). Then click on write IMEI. Enable Qualcomm Diagnostic Mode Useful for Repair IMEI or Repair Baseband your phone using QPST or other tools. In Device Manager your phone should be identified as Qualcomm USB Composite Device 901D or similar. 12-26-2020, 1644. Second method Using ADB mode. Off course, my Xperia XZ1 is Bootloader is Unlock Bootloader AllowedNO and i cant root this. Dec 27, 2020 please explain the correct procedure. For you to enable diag mode, your phone needs to be rooted. Tick imei 1 and imei 2 and write imeis then click write qcn and select qcn. So, devices on other processors may not work if this guide is followed. Apr 14, 2022 Click on the Settings button and enter ustest to Login. Scroll down to the Downloads section and click on the Download button for the CM2SP2 Diag Helper tool v1. Select proper dig port. 04 website. 3 KB, 534 views) Last edited by hasanurgsm; 12-26-2020 at 1649. Scroll down to the Downloads section and click on the Download button for the CM2SP2 Diag Helper tool v1. Bypass APK ; Download Qualcomm USB Driver Latest Setup Update 2022. Its going to refresh and then you should have an entry like this Qualcomm HS USB Android DIAG 901D so this is your. Here we have shared the download link to download Qualcomm Smartphone Write IMEI Tool. Jan 28, 2023 Go to the Gsmatoztool. I&39;ll just copy it here; setprop sys. 1st Method Dial Number Type 717717 on dialpad. IMEI Repair in FTMDiag Flash Mode. 3 (permalink). Sep 9, 2018 Qualcomm DIAG Mode Imei Repair Tool- Tool work with Diag FTM (for zte) Mode Support many Qualcomm devices Autodetect Diag Com Port or manual enter number of Diag Com Port Read More- Xiaomi MI Account Remove Tool 2019 - Bypass FRP Lock Features of SN Write Tool- Flash Single or Multiple IMEI. Enable Qualcomm Diagnostic Mode Useful for Repair IMEI or Repair Baseband your phone using QPST or other tools. This tool is for all Qualcomm phones with a diag port enabled. Once the installation is complete, launch the CM2SP2 Diag. Remove Demo Vivo CPU Qualcomm Enable Diag (558) - Vivo Y20. Samsung A205F U9 restore orginal imei (in twrp mode) Samsung A205F U9 Restore Original IMEI. I&39;ll just copy it here; setprop sys. config rndis,diag,adb" At this time, if you installed the Qualcomm Drivers, your device manager should have a port similar to "Qualcomm HS-USB Diag". Code Operation Repair IMEI Searching for Device in FTM Mode. Now, you have Enabled Or Disabled Diag Mode on Qualcomm device. It offers some pretty good features for a low price. If you are not running a OnePlus or OPPO device then dont worry, it is very likely that your Keep expecting and be surprised Screen Lock 1 P2008 Code P2008 indicates the PCM has detected an open in the bank 2 intake manifold runner position sensor circuit Rick's Free Auto Repair Advice has over 1,500 auto repair and information. qcn in different ways via QFIL, QPST and NV Tools; editing the IMEI using NV Tools and Qualcomm IMEI Rebuilder, then checking that the file actually got edited and contained proper IMEI; restoring the qcn with QPST and QFIL (backup and restore with and without Muti-Sim option). Its going to refresh and then you should have an entry like this Qualcomm HS USB Android DIAG 901D so this is your. Go to the Gsmatoztool. These driver files are also compatible with all MTK & Qualcomm enable Flashing or Imei repair boxes including Miracle box, CM2, MRT Tool, QPST Flash Tool, easily. 1st Method Dial Number Type 717717 on dialpad. There are three methods on how to enter DIAG Mode. Not sure how I managed to get the Qualcomm ANDROID Diag to show up (The exact interface driver that showed up was Qualcomm HS-USB Android DIAG 901D) it just magically appeared after trying to. 12-26-2020, 1644. But in order to do this, you will have to enable Diag Mode on your device at first via dialing or putting ADB commands. Code Operation Repair IMEI Searching for Device in FTM Mode. Qualcomm Imei Repair Tool Download Hosin T70. Click on the Write1 Button to begin the Writing Process. So, lets se how asy its to us the Qualcomm Smartphon Write IMEI TooI to writerepair lMEI on a quaIcomm device. Scroll down to the Downloads section and click on the Download button for the CM2SP2 Diag Helper tool v1. View Details. Qualcomm Diagnostic Mode or DIAG Mode is useful for changing the IMEI or repair baseband on your phone using QPST, WriteDualIMEI, . Select Write IMEI1 (if you have dual SIM device then also select Write2 option) and click on OK button. Diag mode on The ability to enable diagnostic mode on the device, which allows for more advanced troubleshooting and testing. Connect your device and select the COM Port as USB and Enter the IMEI number in the space provided. Download and install Qualcomm QPST Diag drivers . Download and install Qualcomm QPST Diag drivers . Step-3 Boot into TWRP recovery > From TWRP&x27;s menu, select Advanced > then Terminal. Second method Using ADB mode. a frame house for sale maine. cloudflare ssh. Start QPST Configuration (Note Right click and "Run as administrator). com CM2SP2 Diag Helper tool v1. IMEI Repair in FTMDiag Flash Mode. The display is perhaps small for the users standards. Once the installation is complete, launch the CM2SP2 Diag. 3 (permalink). 3 KB, 534 views) Last edited by hasanurgsm; 12-26-2020 at 1649. I&39;ll just copy it here; setprop sys. Its going to refresh and then you should have an entry like this Qualcomm HS USB Android DIAG 901D so this is your. and try. 04 installer. Save the installer to your computer and run it to install the CM2SP2 Diag Helper tool v1. Scroll down to the Downloads section and click on the Download button for the CM2SP2 Diag Helper tool v1. Advertisements If you see an error and see no IMEI, then follow this process further Step-2 The EFS is corrupt and that is the reason we don&x27;t see IMEIs. 3 (permalink). To confirm, you go back to device manager. If this does not work, do the second way. It offers some pretty good features for a low price. Connect Device To Computer. If this does not work, do the second way. how can i solve this problem help Port COM2826 Qualcomm HS-USB Diagnostics 9091 (COM2826). In Device Manager your phone should be identified as Qualcomm USB Composite Device 901D or similar. "> Apr 14. Download and extract the QualcommSmartphoneWriteIMEIToolCredit XDA Member text1 to any convenient location on your PC. Save the installer to your computer and run it to install the CM2SP2 Diag Helper tool v1. If this does not work, do the second way. Qualcomm core optimized. "> . td bb mu ir. Qualcomm DIAG Mode Imei Repair Tool- Tool work with Diag FTM (for zte) Mode Support many Qualcomm devices Autodetect Diag Com Port or manual enter number of Diag Com Port Read More- Xiaomi MI Account Remove Tool 2019 - Bypass FRP Lock Features of SN Write Tool- Flash Single or Multiple IMEI. Not Found Port COM110 Qualcomm HS-USB Android DIAG 901D (COM110) Compile Jun 29 2018 205111 Release Jun 21 2018 080000 Hw. Apr 14, 2022 Open the phone dialer app and type 717717 to enable. IMEI Repair in FTMDiag Flash Mode. Diag mode imei repair for hexagon cpu. Tick imei 1 and imei 2 and write imeis then click write qcn and select qcn. Ultimate Guide Qualcomm Snapdragon imei and Baseband Repair. Its going to refresh and then you should have an entry like this Qualcomm HS USB Android DIAG 901D so this is your. Fixed a severe bug in Qualcomm NV Tools that prevented. After that put the original IMEI on the back cover of your phone. Once you have DIAG port-enabled . southern barbeque menu; meggnut discord; cph vbs 2022. Not sure how I managed to get the Qualcomm ANDROID Diag to show up (The exact interface driver that showed up was Qualcomm HS-USB Android DIAG 901D) it just magically appeared after trying to. Type IMEI1 And IMEI2 then hit from the device on Write IMEI button. Connect the phone to the computer in normal mode. Tick imei 1 and imei 2 and write imeis then click write qcn and select qcn. fb; pv. You guys must backup efs. Its going to refresh and then you should have an entry like this Qualcomm HS USB Android DIAG 901D so this is your. Download and extract the QualcommSmartphoneWriteIMEIToolCredit XDA Member text1 to any convenient location on your PC. Code Operation Repair IMEI Searching for Device in FTM Mode. 04 installer. Save the installer to your computer and run it to install the CM2SP2 Diag Helper tool v1. Need Good qcn or backup qcn from working phone using qpst. 3 (permalink). Download and install Qualcomm QPST Diag drivers . - Qualcomm Smartphone Write IMEI Tool and WriteIMEI are equally unable to write in the IMEI. and try. If this does not work, do the second way. Also, you can follow our guide on how to repair the IMEI number on any Qualcomm powered device. Once the installation is complete, launch the CM2SP2 Diag. 3 KB, 534 views) Last edited by hasanurgsm; 12-26-2020 at 1649. Jul 26, 2019 Thanks Meter 220. config diag,adb. mx 13 crankcase pressure sensor location, brandy and billy leaked videos

can support future vivo phones. . Qualcomm imei repair diag mode

Connect your device in the required mode, e. . Qualcomm imei repair diag mode north node conjunct sun solar return

Jan 28, 2023 Go to the Gsmatoztool. 3 KB, 534 views) Last edited by hasanurgsm; 12-26-2020 at 1649. config rndis,diag,adb" At this time, if you installed the Qualcomm Drivers, your device manager should have a port similar to "Qualcomm HS-USB Diag". 1st Method Dial Number Xiaomi Mi Enable Diagnostic Mode Diag Port - 717717 Lenovo Vibe Z K910 Enable Diagnostic Mode Diag Port 8899 ZTE Nubia Z7 MaxMini Enable Diagnostic Mode Diag Port 7678. Now, you have Enabled Or Disabled Diag Mode on Qualcomm device. Step-1 First check the IMEI by dialing 06. Added Support for Helio CPU (MT6750, MT6755, MT6763, MT6739 etc). IMEI Repair in FTMDiag Flash Mode. E-GSM Tool Full Crack With Loder FREE Features. Qualcomm Diagnostic Mode or DIAG Mode is useful for changing the IMEI or repair baseband on your phone using QPST, WriteDualIMEI, . Added Support for Helio CPU (MT6750, MT6755, MT6763, MT6739 etc). Enable USB Debugging. Vestel Venus All Qualcomm Models Repair IMEI Guide. config diag,adb. If this does not work, do the second way. fb; pv. Iptek kita oppo a37f how to enable diag port by code and restore qcn fix imei baseband unknow no service fix, servis memperbaiki, diy cara mudah. Dial 717717 to enable diag mode. compagesdownloads)Diag mode (13491) "not need root"Dr. config diag,adb. Thread starter marshharsha; Start date Jun 30, 2017;. If not keeping trying to re-enter diag mode and ensure the drivers are correct. Go to the Gsmatoztool. The diag port install will be automatic. Fixed a severe bug in Qualcomm NV Tools that prevented. compagesdownloads)Diag mode (13491) "not need root"Dr. Write Security patch > phone in Fastboot Mode > Qualcomm tab > XWriter >Select XML "File in Core Data -Modems". Restore QCN File With UMT Dongle. com CM2SP2 Diag Helper tool v1. If not keeping trying to re-enter diag mode and ensure the drivers are correct. Need Good qcn or backup qcn from working phone using qpst. Enable USB Debugging. 20 Full Version · Hydra Tool Qualcomm Module v1. config diag,adb. To confirm, you go back to device manager. Fixed - Qualcomm Loader not match issue for some devices. Mar 24, 2020 Now it is time to enable Diag mode by running "setprop sys. and try. 2nd Method ADB Mode Your Phone Must be Rooted. Operation Repair IMEI Searching for Device in FTM Mode. Open Minimal ADB And Fastboot. Code Tool work with Diag FTM (for zte) Mode Support many Qualcomm devices Autodetect Diag Com Port or manual enter number of Diag Com Port. hv; pj; vw; cb. Repair IMEI Diag Mode · Miracle Thunder or Miracle Box Latest Setup v3. com CM2SP2 Diag Helper tool v1. Cara repair imei all qualcom mode diag Ufi box setup (httpswww. net; The requested language is accepted. The battery gives runs the device for a long hour with heavy functioning. The battery gives runs the device for a long hour with heavy functioning. get devices full information (like imei , esn, meid , sn, software version and more) manage spc code; write qcn file (xml, bin) read qcn from device; write imei (sim1, sim2) write meid; write esn; functions qcn file repair read info from qcn file (imei sim1 ,imei sim2 , esn) change imei sim1 , imei sim2 from qcn; Read More and get codes. Dec 27, 2020 please explain the correct procedure. 5K subscribers Subscribe 289 Share Save 72K views 4 years ago Qualcomm (QLM) Android Tutorials Download. Here we have shared the download link to download Qualcomm Smartphone Write IMEI Tool. 04 website. Download and extract QLM IMEI REPAIR Tool; Run QLM IMEI REPAIR Tool. (Note Some times qcn backup and restore can solve yur unknwn baseband imei issues. Save the installer to your computer and run it to install the CM2SP2 Diag Helper tool v1. southern barbeque menu; meggnut discord; cph vbs 2022. Important If you have a single mobile SIM then type the same IMEI number in both section IMEI1 & IMEI2. You also need to have installed your Qualcomm USB drivers. For This Useful Post majub alli The Following User Says Thank You to Rajkumar9675 For This Useful Post firmwarehouse. I have flash my XPERIA XZ1 and i have lost my IMEI. Repair IMEI OnePlus Method Xiaomi RSA Devices Repair IMEI (ADB Diag Mode) Repair MEID (Diag Mode) Repair ESN (Diag Mode) Read & Write QCN (Diag Mode) Patch, Write IMEI inside QCN Screen Locks Security Red Pattern (EDL Mode - Encrypted UserData Not Supported) Remove Locks Without Data Loss (EDL Mode - Encrypted UserData Not Supported). Repair IMEI OnePlus Method Xiaomi RSA Devices Repair IMEI (ADB Diag Mode) Repair MEID (Diag Mode) Repair ESN (Diag Mode) Read & Write QCN (Diag Mode) Patch, Write IMEI inside QCN Screen Locks Security Red Pattern (EDL Mode - Encrypted UserData Not Supported) Remove Locks Without Data Loss (EDL Mode - Encrypted UserData Not Supported). Go to the Gsmatoztool. 2nd Method ADB Mode Your Phone Must be Rooted. Terminal Emulator App (APK) to Enable Or Disable Diag Mode on Qualcomm device Your phone should be Rooted first for the second method. Apr 14, 2022 How to use Qualcomm Smartphone Write IMEI Tool Open QualcommSmartphoneWriteIMEI. com CM2SP2 Diag Helper tool v1. Click on the Write1 Button to begin the Writing Process. Tick imei 1 and imei 2 and write imeis then click write qcn and select qcn. Open up "QPST Configuration" which was installed earlier. Scroll down to the Downloads section and click on the Download button for the CM2SP2 Diag Helper tool v1. Enable this mode to repair qualcomm chipset device imei Main command which users confuse. Second one (on new models this is very common). Updated on April 14, 2022. If this does not work, then try the second method. First, you need to download the software on your computer. com CM2SP2 Diag Helper tool v1. Qualcomm Imei Repair Tool Free Download Andriod Phone Repair Android Computer. Qualcomm qcn read, write by diag. Qualcomm core optimized. Click on the Settings button and enter ustest to Login. phone imei1 0- and imei2 0- phone no network no amerngency call. and try. Xiaomi Redmi S2 Diag Mode Enable TutorialDiag mode driver . Need Good qcn or backup qcn from working phone using qpst. (10-06-2021, 0901 PM) CAMERON1988 Wrote I flashed my wife&x27;s gionee s10lite but lost imei after flashing, right now I can&x27;t root the phone and I can see that it cannot boot into diagnostic mode without root, I have tried everything regarding unlocking the bootloader but no success, pls I need your help hovatek regarding root, unlocking bootloader and booting into diagnostic mode. config rndis,diag,adb" At this time, if you installed the Qualcomm Drivers, your device manager should have a port similar to "Qualcomm HS-USB Diag". Terminal Emulator App (APK) to Enable Or Disable Diag Mode on Qualcomm device Your phone should be Rooted first for the second method. Samsung A205F U9 restore orginal imei (in twrp mode) Samsung A205F U9 Restore Original IMEI. com CM2SP2 Diag Helper tool v1. Added - Xiaomi, Huawei, Oppo Tab (For Specific and special Functions) Added - Driver information. To confirm, you go back to device manager. 04 installer. (like imei , esn, meid , sn, software version and. fb; pv. 1st Method Dial Number Type 717717 on dialpad. jpg (143. Enable USB Debugging. Dec 27, 2020 please explain the correct procedure. please explain the correct procedure. You also need to have installed your Qualcomm USB drivers. If this does not work, do the second way. Save the installer to your computer and run it to install the CM2SP2 Diag Helper tool v1. Attached Images. Step-3 Boot into TWRP recovery > From TWRP&x27;s menu, select Advanced > then Terminal. You can also type these commands in device terminal. . portal 2 coop walkthrough