Weirdest problem with the 816 - Desire 816 Q&A, Help & Troubleshooting

So I am keen on how to fix bootloops and going back to stock/rooting, etc...
My friend asked me if I could fix his phone for him, so I said why not. Thing is, it's the weirdest problem I ever faced with a phone, EVER.
The problem is the phone boots normally, I unlock the pattern, some seconds later it turns off and reboots. So I said hey why not boot into safe mode, perhaps it's an app causing all of this, so I did, worked perfectly, turns out "Google Play Services" was "forcing close" and suddenly phone turns off. I uninstalled all updates, cleared data, cache, everything and installed EVERY SINGLE APP on the phone and removed pattern, then rebooted phone. BUT, when i rebooted, the pattern was back, language was back to arabic (I changed it to english when in safe mode), ALL APPS were back, and the updates to Google Play Services were back. It's like I didn't do anything. So I said before it turns off I'm goin to try 1 thing, so I immediately went into settings and managed to uninstall updates for Google Play Services and cleared cache data, even to all google apps, and then I re-uninstalled all applications (out of safe mode), I thought perhaps when irebooted from safe mode, everything was back, now that I'm goin to reboot out of safe mode, this will work. So I rebooted, and guess what? EVERY SINGLE APP was back, system language back to arabic, AGAIN, and pattern was back and GPServices updates were back.
So I said hey, let's factory reset. SO I went into safe mode, I hit factory reset, phone reboots to recovery (vol up + power ) > Factory reset done > wipe cache partition done > reboot : EVERYTHING WAS THE SAME. I am completely shocked. I tried doing Factory reset out of safe mode too, same result. So I said hey, let's unlock this thing and just flash a stock rom, that'll fix it indeed. I went into fastboot and tried flashing the unlock token, the confirmation page appeared, clicked "YES", phone reboots: PATTERN AND EVERYTHING STILL THERE, while they shouldn't be since unlock performs a Factory reset, so I went back to fastboot and it indeed was NOT unlocked, I tried many times and it failed every single time I tried.
So I said hey, download AVG Antiviirus and run it perhaps it can find the problem, so I did and ran it, couldn't find anything, rebooted phone and AVG was gone. So I said, hey, again, download Google Play Services and install it on your phone, perhaps it will permanently override the one existing and it will fix the problem (it didn't, it would disappear and the old G.P.S reappear as soon as I reboot). So I said hey, you got the OTA Zip, it has the firmware, perhaps flashing that firmware will shake things up, most probably brick the phone but perhaps will let me unlock it. So I went into fastboot > fastboot oem RebootRUU > phone reboots normally, I CAN'T even access RebootRUU.
So as you can see I probably tried everything one can do in this situation.

Related

Weird Problem! Cant unlock/factory reset ..

My sisters gnex is acting strange.
I try to unlock bootloader.. it says unlocked, and when rebooted, says again locked.. (in fastboot)
Also when i try to reset the phone(factory reset), using stock recovery, or the option in the settings, NOTHING happens!!!
The phone reboots, and it is in the same state it was a couple of days ago with:
gps opened, 3g enabled...
Whatever i do to the phone, it restores to that state...
Also some random reboots occured in the past, and phone again went to this state, no matter what changes you do on the phone. eg my sister put face unlock.. and after a random reboot we got:
previous unlock method and.. gps on, 3g enabled..
Any ideas???
Phone is on 4.0.4, and IMM76K..
3.0.8 kernel.
Stock
now, i unistalled all apps, restarted, and ALL was back there...
even gps was open...
It seems we cannot do any change....
I would return it, and get a new one.
Sent from my i9250
isnt any solution to this?
fastboot command for factory reset is:
fastboot erase userdata
and ..
fastboot erase cache
?

P936 sudden reboots during download from play store

After updating several files and during downloading my P936 suddently rebooted as sometime typcial for CM10.1. I am on RC2 and WindKernel 2.0.1.
Now, after -several- reboots *i guess it were 4* it got even worse.
First, I got the start screen and download again and boom reboot.
Second, I could type in the PIN of sim and reboot.
Third, I could not even tye in the PIN anymore and reboot.
Forth, I switched it off and turned on again.
Now, it wants to start the apps, but hangs at the start screen "starting the apps" :crying:
Weird. What can I do?
I had nearly the same kind of problem on my LU6200. Factory reset and clearing Dalvik cache in recovery helped me.

[Q] Phone randomly crashes, trying to root now.

I had the phone for about a month now, i bought it on ebay it stated it was New, i check and it is still locked S-On.
But just randomly it started to crash and reboot. I tried all the basic steps, remove apps but every time it reboots it reloads everything back on it.
I tried both hard reset and factory reset both did not work. I'm noticing that i cant turn off fast boot because once it crashes and reboots, all the setting and apps go back to the way it was. Now I'm trying to root it to see if that would cure the problem and thinking possibly an update got corrupted or something and i know once you root it, it will erase all internal data.
While trying to root it, i got all the way to loading the bootloader and once i selected yes to unlock bootloader, it restarted but nothing happened it went back to the way it was. I've tried to delete/erase my data and cache through windows command but keeps saying it failed. Also now i cant start the bootloader over again.
Any ideas what i can try or do? is there an Hboot loader since I'm not able to turn off the fast boot in the setting?
I'm very new to rooting but catching on quickly.

Wrong pin bug resulted to bootloop after factory reset

Hey guys,
The tablet wouldn't recognise my pin. It happened once before but a simple reboot fixed it. This time nothing I tried worked (switched accounts, restart, wiping cache partition). So after a lot of consideration I decided to go to Recovery and do a factory reset. After it finished, it automatically restarted and since then it's in a bootloop.
All the instructions I've read about factory reset say you need to manually reboot after it's finished whereas mine rebooted by itself. Do you think that's why it's stuck now? What can I do?

Can't Setup U11 EYES After Factory Reset

I recently bought a new device and decided to give my HTC U11 EYES to my sister-in-law. So I did a factory reset through the recovery mode (rather than through the Android settings). Now the phone refuses to proceed through initial setup. I can get to the Welcome screen where I choose the language, then it asks me to connect to a WiFi network (which it does successfully, and I have to do so otherwise the "Next" button is grayed out), then it goes to a screen that says "Checking for updates, this may take a minute or two" and it just sits there forever. It never progresses beyond that. There's no "Skip" option anywhere, there's no EULA to agree to, and the WiFi icon shows all kinds of constant activity. But the setup never progresses beyond that update screen. I tried leaving it on overnight, it's been 10 hours. Still nothing. I tried doing another factory reset, same result.
I've owned two of these devices and never had an issue doing initial setup before, but I've never done a factory reset on either of them before. Normally a factory reset is supposed to SOLVE problems, not cause them. I have no idea what's wrong or how to fix it. I've been unable to find an original RUU that successfully flashes to the device.
try to wipe the cashe
Go again to download mode by pressing power and volume down together, then check for wipe Cashe drive
And you can try again factory rest later after restart

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