I am facing a very strange issue with my N4. On Friday Night, I kept my phone for charging overnight and it was working as usual. on Saturday morning, I noticed that the phone was unresponsive and was showing a blinking red light. Tried to charge via various means but it was of no use. Finally went to a LG service centre were they could revive the phone but it was stuck in a bootloop. He suggested me that he will downgrade from KK 4.4.2 to JB 4.3 but still the phone was stuck in bootloop.
LG guy said that he doesn't have answer why this is happening. He said change the motherboard that will fix it. That is a very costly option which I cannot take. and he mentioned that there are tools online which will help it work but as an authorized service centre place he can't do it.
So here's what I did after reading several blogs, videos and but got stuck in the same place.
1. Booted in Bootloader mode, flashed stock JB 4.3 using Wugfresh Nexus Toolkit selecting the option Softbrick / Phone in bootloop.- Result : Stuck at Bootloop.
2. Flashed CWM Touch via fastboot, Went to the CWM recovery, Cleared the dalvik cache, Data, User data, Cache, Reflashed a Stock JB 4.3 - Result : Stuck at Bootloop.
3. Flashed KK 4.4.2 , again using the Wugfresh Nexus Toolkit - Result : Stuck at Bootloop.
I tried searching google for bootloops due to motherboard issues just to be clear from my side. The solution what LG guy gave sounded like I have no idea, lets replace the entire thing. Which i am pretty sure is not the correct method.
What my phone can do at this moment is:
1. boot into bootloader.
2. Communicate with the PC using Fastboot.
I know Nexus 4 is a developer phone and easy to recover from brick status due to its intended purpose. Please advise what else can I do to revive my Nexus 4 and let me know in case I haven't done any thing which can restore this thing back to normal.
Thanks and Cheers,