[Nexus 5 Q&A, Help & Troubleshooting] McKis:
Greetings!

As the topic says, I have a Nexus, which is kinda bricked (soft or hard, don't know). The current situation is that it boots up -> Google logo -> Nexus logo -> "Unfortunately, the process android.process.acore has stopped..." followed by dozen other process kills. After pressing 'ok' for about twenty times, I get to see the welcome screen, which you get after factory reset. I'm also able to skip through almost all the set ups (while pressing 'ok' at the force closures), but usually I can't get past the last phase, which is 'finish' or something. When I press the button, it says the same thing with the process has stopped and reverts to the previous phase or sometimes reboots itself.

However, during my repairing process, I've managed few times to get past the initial setup an into the android settings via notification bar

. No idea when this happens, seems quite random. It also reboots randomly, followed by few more reboots with "android is upgrading" message. Randomness is a key word here.

So, how this happend? To be honest, don't really know. I got this from a friend, who said it just shut down in the middle of Clash Of Clans, possibly due to low battery. I have no idea what's been done to the phone after that apart from my desperate repairing experiments.

I've searched all over the internet and the most reasonable answer I found, was "flash stock image", which I tried and it gives some kind of 'flash write error'.

Also, the bootloader is locked. I know how to unlock it, but for some reason it re-locks after reboot.

I've tried all sorts of toolkits and also the command line "fastboot oem unlock", but no cigar. I get the unlocking screen and I'm able to unlock, but after I boot, the bootloader says "locked" again. Also,

everytime I boot up, I get the welcome screen with the process stopped windows even if I somehow manage to surf through the initial setup.

I also tried to flash without unlocking and flash without rebooting after unlock command, but the

phone gives a 'flash write' error

. Needless to say, I've also tried factory resetting and clearing cache from recovery, but it doesn't seem to help anything.

Cache wipe also gives an error saying "can't open /cache/recovery/last-log (+ /last_install) (read-only file-system)

. Don't know if this is due the locked bootloader?

Is there a way to flash Nexus 5 in a download mode?

I managed to get into one by accident, but didn't really find any help from google... I'm more used to my Samsung Galaxy S3, which has download mode to help unbrick bad flashes etc. Nexus-LG is apparently a bit different.

I'm wondering, if it's possible that the flash memory is broken? Apparently it's somehow corrupted atleast, but

is there any way to force flash or do something to clean up the whole thing without unlocking or can I unlock it some other way?

I've already used all my knowledge and imagination over this thing, but can't seem to make any progress. Please ask me, if there's something I forgot to mention in my post. It's a shame there's no external-sd slot in this, 'cause I'm quite sure the phone should be totally working otherwise.

Thanks for your interest and answers in advance!

PS. Feel free to give me any sorts of experimental tricks; I've spent 0 euros on this thing, and I'm willing to try anything... it can't really get "more not working" :laugh: