[Android Q&A, Help & Troubleshooting] Aramir:
Phone bricked stuck on Android screen,access to adb & fastboot logs provided [Solved]

Hello,

I recently messed up my phone. Long story short, I snatched an OTA, modified it and tried to force it on my phone. The vanilla OTA always failed in the check process because I modified some /system files on my phone. In result of that, a couple of files has been wrongly patched ( /system/app/OpenWnn/OpenWnn.apk ; /system/bin/debuggerd ; /system/bin/install-recovery.sh ; /system/priv-app/ApeCloudFileManager/ApeCloudFileManager.apk ; and maybe others indirectly ). I can provide more informations about my slip up if you wish.

Since then when I start my phone I'm stuck at the "Wiko, powered by Android" screen. I can access the stock recovery menu, and the factory mode. I also have access to my phone throught adb, adbd, and fastboot.

My phone is a Wiko Rainbow Lite 4G ( http://world.wikomobile.com/m745-rainbow-lite-4g ), the actual manfacturer is Tinno so the phone is probably sold under different names around the world, Wiko being only a "middle-man".

With that said, I can't flash the ROM using the utility given to me by Wiko. They do not provide "stock rom" with scatter file, but instead use their own software, a sole .exe file ready-to-use, you hook your phone to your pc, restart the phone by pressing random combination of buttons, and voila. However, I managed to extract the system.img, boot.img, etc files from the .exe . So I figured out I could try to use "fastboot flash system system.img" command to restore whatever files are messed up. Might as well not touch /recovery and /boot because I can access the recovery the phone seems to boot correctly ( from what I understand /boot is just a bootloader, so me being a pc-guy I wouldn't see the point of reinstalling GRUB if windows was missing a dll or something like that ) .

But the phone is locked .... Here's the "fastboot oem device-info" result

(bootloader)	Device tampered: false
(bootloader)	Device unlocked: false
(bootloader)	Charger screen enabled: true
(bootloader)	Display panel:
OKAY [ 0.005s]

And I when I try to "fastboot oem unblock" :

FAILED (remote: oem unlock is not allowed)

So yeah .... I'm stuck there. If anyone got an idea, even a vague one of what I could try next to unbrick my phone that would be very kind of you. There's no wrong answers. So please if you got a couple minutes to spare (you already made it through my laïus which is already something ) I would be very grateful.

I'm thinking about extracting files from system.img and copy them on my /system partitions throught adbd with a script .... But I'm not sure if that would help or make it worse.

If you need informations here's the logcat I got under "factory mode" ; part1 : http://pastebin.com/nx7BC8K5 , part2 : http://pastebin.com/eU94B9VE

the pstree (because come on, if a phone can launch all of that, certainly there's something we can do to repair it) : http://pastebin.com/ZWd6vC9q

dmesg : http://pastebin.com/RYfbF0ub

prop : http://pastebin.com/k6T4bYnu

cpuinfo : http://pastebin.com/a6eMQTmd

PS : Yes I'm still a noob when it comes to Android, but please if you have any questions, need more informations, ask and I shall provide.

PPS : @moderators, I apologize if I posted in the wrong section, please redirect me