I have hard-bricked my Nexus 4 while flashing Optimus G Kitkat KDZ file. I could not get into download mode, fastboot, and it had no signs of life but Qualcomm HS-USB driver. I have successfully restored it to download mode, which allows to flash stock ROM via instruction at Here.
LG BoardDiag looks like this:
However, since there is no Nexus 4 on this list, I have chose G (APQ8064), as Optimus G uses same AP and it is almost identical to Nexus 4.
You need to download tot file for Nexus 4 from this post:
http://forum.xda-developers.com/nexu...eu-au-t1976057
Click the link saying LGE960AT-00-V10c-NXS-XX-NOV-14-2012-JVP15L-FACTORY_0.
If you already have a .tot file, we need to extract important files including bootloader and partition table within tot file.
1. Rename tot file extension to bin (*.tot to *.bin). Renaming will make this file also usable for LGNPST, which you can use to flash Nexus 4 stock ROM.
2. On the Image Extraction section of BoardDiag, click 3 dot button on BIN, then choose Nexus 4 firmware image renamed at step 1.
3. Click 3 dot button on DIR, and make a folder "N4" on any familiar directory.
4. Click "Extract" Button.
5. On Target DIR section of the BoardDiag, choose "N4" folder you have created at step 3.
6. Go to Device Manager and find COM port number of HS-USB QDloader (In my case, it was COM13, but in case COM port of your Nexus 4 is different, you need to choose right COM Port.)
7. On BoardDiag, at COM Port section, choose COM Port that you have seen on Device Manager at step 6 (If HS-USB QDloader showed COM13, you may select COM13, otherwise, choose right COM Port that you have found on Device Manager.)
8. Tick AP check, then click start.
9. Tick EMMC Test, then click start after AP check is done.
10. Tick SDRAM Test, then click start after EMMC Test is done. Wait until your device shows "Download Mode" screen.
11. Download Automated LGNPST on This Post. and install LGNPST.
12. Flash Nexus 4 stock ROM (bin file used at step 2) with LGNPST. However, after you flash stock ROM via LGNPST and finish first boot, it will show "type password to decrypt storage". Don't panic and flash factory image from google (I recommend 4.2.2) on fastboot mode (Vol up + down + Power without power/usb cable connected. If vol up+down are pressed while usb / power cable is connected, it will boot up to download mode.)
13. For storage issue (16GB model showing 8GB of storage), follow the instruction at http://forum.xda-developers.com/nexu...ck-n4-t2347060 .
Credits
kryptonite for providing LG BoardDiag and instructions how to use BoardDiag
Gigadroid for providing instruction how to use LGNPST and solve storage issues.
LG BoardDiag looks like this:
However, since there is no Nexus 4 on this list, I have chose G (APQ8064), as Optimus G uses same AP and it is almost identical to Nexus 4.
You need to download tot file for Nexus 4 from this post:
http://forum.xda-developers.com/nexu...eu-au-t1976057
Click the link saying LGE960AT-00-V10c-NXS-XX-NOV-14-2012-JVP15L-FACTORY_0.
If you already have a .tot file, we need to extract important files including bootloader and partition table within tot file.
1. Rename tot file extension to bin (*.tot to *.bin). Renaming will make this file also usable for LGNPST, which you can use to flash Nexus 4 stock ROM.
2. On the Image Extraction section of BoardDiag, click 3 dot button on BIN, then choose Nexus 4 firmware image renamed at step 1.
3. Click 3 dot button on DIR, and make a folder "N4" on any familiar directory.
4. Click "Extract" Button.
5. On Target DIR section of the BoardDiag, choose "N4" folder you have created at step 3.
6. Go to Device Manager and find COM port number of HS-USB QDloader (In my case, it was COM13, but in case COM port of your Nexus 4 is different, you need to choose right COM Port.)
7. On BoardDiag, at COM Port section, choose COM Port that you have seen on Device Manager at step 6 (If HS-USB QDloader showed COM13, you may select COM13, otherwise, choose right COM Port that you have found on Device Manager.)
8. Tick AP check, then click start.
9. Tick EMMC Test, then click start after AP check is done.
10. Tick SDRAM Test, then click start after EMMC Test is done. Wait until your device shows "Download Mode" screen.
11. Download Automated LGNPST on This Post. and install LGNPST.
12. Flash Nexus 4 stock ROM (bin file used at step 2) with LGNPST. However, after you flash stock ROM via LGNPST and finish first boot, it will show "type password to decrypt storage". Don't panic and flash factory image from google (I recommend 4.2.2) on fastboot mode (Vol up + down + Power without power/usb cable connected. If vol up+down are pressed while usb / power cable is connected, it will boot up to download mode.)
13. For storage issue (16GB model showing 8GB of storage), follow the instruction at http://forum.xda-developers.com/nexu...ck-n4-t2347060 .
Credits
kryptonite for providing LG BoardDiag and instructions how to use BoardDiag
Gigadroid for providing instruction how to use LGNPST and solve storage issues.
Download from this link
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