Develop Bugs

[Q] Had my GN died?

I was updating some apps in the market, as suddenly the phone reboots without any warnings.
OK, **** happens i thought and let it boot. But now the phone starts the ROMs boot animation for about 4-5 seconds and then reboots over and over again.
I pulled the battery and started into recovery. I made a nandroid and wiped cache and dalvik. Reboot with same behavior.
Recovery again: wiped everything and flashed a new AOKP M3 - result: reboot and loop again
Back to recovery: tried to flash the before made nandroid - MD5 checksum error
Flashed an older nandroid and got boot loops again.
So, i think this piece is for the service now...
What is the best way to reset this GN? Using ToolKit to put back stock recovery and lock the bootloader? Or should i try something else?
Update:
Flashed Stock Google Image via ToolKit 5.4 and after that the phone is booting normal?!?
I reflashed the touch recovery and pushed the AOKP build 27 back to the phone and flashed it.
So far so good - I have to start from the bottom now, because flashing the stock rom wiped the whole phone and EVERYTHING on sdcard is gone
Do you think there is a hardware failure? Perhaps some sort of memory malfunktion or something like that?

Same thing just happened to me, thi is the second time

lighthammerhh said:
I was updating some apps in the market, as suddenly the phone reboots without any warnings.
OK, **** happens i thought and let it boot. But now the phone starts the ROMs boot animation for about 4-5 seconds and then reboots over and over again.
I pulled the battery and started into recovery. I made a nandroid and wiped cache and dalvik. Reboot with same behavior.
Recovery again: wiped everything and flashed a new AOKP M3 - result: reboot and loop again
Back to recovery: tried to flash the before made nandroid - MD5 checksum error
Flashed an older nandroid and got boot loops again.
So, i think this piece is for the service now...
What is the best way to reset this GN? Using ToolKit to put back stock recovery and lock the bootloader? Or should i try something else?
Update:
Flashed Stock Google Image via ToolKit 5.4 and after that the phone is booting normal?!?
I reflashed the touch recovery and pushed the AOKP build 27 back to the phone and flashed it.
So far so good - I have to start from the bottom now, because flashing the stock rom wiped the whole phone and EVERYTHING on sdcard is gone
Do you think there is a hardware failure? Perhaps some sort of memory malfunktion or something like that?
Click to expand...
Click to collapse
Firstly when you get bootloops or any other problem do NOT do a nandroid as it backs up EVERYTHING, including the problem.
When you "wiped everything" did you go to mounts and storage and format system, cache and data?
If not then you didn't do a proper full wipe.

This is my own experience, but I want to warn you guys. I had a similar problem with my GNex. The first time it happened, my phone rebooted itself every 5 seconds. I completely restored it using factory image and it ran fine for 3 weeks, then one day, the phone just rebooted itself and got stuck at the boot image. I had to factory reset it again to make it work.
After the second time, I called Samsung and sent it in for repair last week. They are shipping me a replacement unit. It seems the problem was hardware related.

econometrician said:
This is my own experience, but I want to warn you guys. I had a similar problem with my GNex. The first time it happened, my phone rebooted itself every 5 seconds. I completely restored it using factory image and it ran fine for 3 weeks, then one day, the phone just rebooted itself and got stuck at the boot image. I had to factory reset it again to make it work.
After the second time, I called Samsung and sent it in for repair last week. They are shipping me a replacement unit. It seems the problem was hardware related.
Click to expand...
Click to collapse
For 3 weeks... exactly 3 weeks, 21 days?
I can tell you that my first boot loop brick was 20 days after I bought the phone. The second was later that day. But the third one was... again, 20 days after the last successful restore. Is there something magical about the 3-week mark???
I am currently taking nightly nandroid backups, so when I had my third boot loop brick my backup was just under a day old. If this is ultimately a hardware problem that can be warrantied, I guess I'll have to try that next time. I would have to make sure I return it with the bootloader locked, stock recovery, but without the wipe because it has to still be boot looping to prove there's an issue!
Anyway, things I will point out:
- It's the complete wipe in bootloader that blanks the internal storage.
- If you have CWM installed, you can back up the internal storage over USB via adb pull /sdcard/ ./sdcard/ (correct me if I got the syntax wrong)
- When the boot loop brick has happened, CWM is not capable of properly reformatting or restoring to the data partition. I have not found a way to repair it without blanking /sdcard (which on the GN is actually in /data/media), so if you don't want to lose those files the only way to keep them is to pipe them out, blank the phone, and then pipe them back in afterwards.
- After a complete wipe in bootloader (either by flashing userdata.img or by relocking/unlocking bootloader), you must boot the phone once into the OS in order to complete the reformatting of /data. If you try booting straight into recovery after a wipe in the bootloader, CWM cannot read or write from that partition.

Can't say for sure whether it's exactly 21 days but it's definitely around 3 weeks. Why don't u give Samsung a call? The phone is not supposed to behave this way. Plenty of people don't have this problem. My wild guess is that the internal flash memory is faulty.

econometrician said:
Can't say for sure whether it's exactly 21 days but it's definitely around 3 weeks. Why don't u give Samsung a call? The phone is not supposed to behave this way. Plenty of people don't have this problem. My wild guess is that the internal flash memory is faulty.
Click to expand...
Click to collapse
I'll warranty it through my carrier next time as they do exchanges on site. The trouble is, once I've recovered the phone, there's no evidence of the problem anymore. The best way to prove it is to show it fritzing out.
Sent from my Galaxy Nexus using Tapatalk

I think this is a known problem. You shouldn't have to prove it to them. They should be aware of it.

It bricked again today so I warrantied it in-store at my carrier. They gave me a brand new one after being unable to find a solution when fiddling with it. As a bonus, all the little hairline scratches on my screen are gone too
The store guy said he's never seen this issue, and it's one of only two warranty locations for my carrier in the Vancouver area. So I can only hope this was a rare hardware problem and not something that pervades every GN they're going to sell.
I can tell this one is from a different batch because it came preloaded with 4.0.2.

Good for you. hopefully my new phone will behave

[Q] Stuck on boot logo, no matter what??

Ok, so I flashed a MIUI port for the AT&T Note 2, and it was disgusting...it crashed everything, and needless to say I ended up stuck at the boot logo for a long time. FINALLY managed to get it to flash via Odin...so I flashed Stock Rom...and now it's stuck on Samsung logo...Ok..so I go flash CWM...do a wipe and everything, and install CM10.1 via that...stuck at CM logo. I've left each ROM plugged in, stuck on boot screen for over 20-30 minutes each. I'm at a loss of what to do. Could I need to flash a kernel? or am I missing something obvious? The good news, I guess, is with a few steps, I can get into DL mode and use Odin, and I can flash CWM and get into that..but I can't inject anything into my phone so CWM can use it, I only have what's there now, which is CM10.1. I'm so mad...I've never had too many issues with ROMs but this one jacked things up badly...guess that's what I get for using a port even though it noted that everything was working now. Anyway...does anyone have any advice?
Edit: I flashed CWM, and tried to clear cache/dalvik then factory reset...the first two worked...as soon as I hit factory reset, that's where the screen goes black and it resets...it's like it just refuses to do it. I'm seriously at a loss here. Is it toast?
Edit again: sorry but I'm trying more to give more info. I went into CWM and went to advanced and started formatting one by one...it's when you hit format /data that it immediately dies and restarts. So..something weird is going on there. Can I use a PIT file for this phone, if it exists, to reformat and just get it going? I'm desperate...

Us this http://forum.xda-developers.com/showthread.php?t=2052779 on a PC.
Follow directions and Odin back to stock.
Sent from my SAMSUNG-SGH-I317 using xda premium

[Q] continuous boot loop TWRP

First of i'd like to thank the community! I've ran in to numerous issues and have been graciously saved several times.
I'll start of by providing some context in to the issue.
original configuration:
Unlocked - T-Mobile US SIM
AT&T LG E980 factory tot 4.1.2 - flashed using LG Flashing Tool
Root - E980 Universal Root
Unlocked Bootloader - Freegee [Android Marketplace]
Installed Recovery TWRP v2.6 - Freegee [Android Marketplace]
Removed bloatware - AT&T Applications
So from this point the phone was working as expected. I spent hours configuring to my liking and decided to call it a night. Before I called it quits I decided to make a backup using TWRP. Backup took a really long time but it said successful. I left handset plugged in to charger overnight, roughly 6 hours of continuous charging. When I woke up I noticed the phone was in recovery mode. Touchscreen was also unresponsive. I held the power button to allow it to reboot and it rebooted me back to recovery. At this point I knew something was wrong. I attempted to re-install backup files made from previous night, this failed. The phone booted back to recovery. I then installing some zip files I had pre-loaded on to the external SD card, this was CM10.1 and gapps files for E980. I tried this out a few days ago and it was working fine. I decided lets try installing this and see what happens. Install was successful and rebooted. The phone boots back in to recovery. At this point I'm really frustrated. I checked the memory card by running through the TWRP menu. I noticed the file sizes were unchanged but the files were not displayed on both in/ext memory. I decided to finally restore again by using LG Flashing Tool. This by the way has saved my a$$ numerous times. So the one thing I would note, at the 85% when the phone reboots I noticed there was an error, an error I've never seen before. It was a picture of sync icon (large) and android man on top of it and text that said "error 0x123456" I didn't note the exact string. I let it go and monitored the flashing tool, somewhere around 93-95% it rebooted again in to the normal boot sequence. Viola my phone is back to where I started.
So here's some of the questions I had:
How did I end up in the TWRP Recovery boot loop?
Why could I not see the files to install once in TWRP?
Why did TWRP continuously boot back in to recovery mode after successful install of restore?
Why did TWRP continuously boot back in to recovery mode after successful install of CM10.1/gapps zip?
Has anyone seen the LG Flashing Tool error I described above and does anyone have an explanation as to what happened?
Here's my theory on what happened...
My phone was on 4.1.2 as mentioned. I noticed a few times that there was a notification stating the phone had a OTA software update available. The first time I tried to update (already rooted and unlocked) the phone failed to update. The error cited that my phone was believed to be rooted. I paid no attention to this and decided to continue using. Later in the day I noticed the notification again, I opted to try again. The phone updated, or at least tried to. It kept booting in to TWRP Recovery. Nothing I could do could restore it, except flashing using the LG Tool. After experiencing this I knew to leave the OTA alone. I don't know if this is possible but somehow I think the OTA was pushed and forced through while I was sleeping allowing the phone to charge. This is the only time I've seen that behavior. Is that even possible???
Where am I now...?
Phone is restored, I opted to upgrade using the OTA before I start tinkering again. Maybe I won't mess with it at all and leave it alone at this point.

Stuck in Boot loop after weeks of normal usage

Hi.
I have a problem with my D855. My phone is rooted and runs the fulmics ROM. Everything was working fine, , on Fulmics 5.3, except than one day, I was using my phone normally and then it crashed. I saw the phone rebooting, but for some reason it got stuck. The phone tried to boot unsuccessfully until the "firmware update" went through, after what it reboots again (unsuccessfully) and so on.
At that time, I was able to access twrp, do some backup, and flash properly with a downgraded version of fulmics (from 5.3 to 4.1).
It was able to boot again and use my phone like before. Yet, after one month of usage, the same problem happened on version 4.1. The phone crashed and now cannot boot.
Any idea of where it is coming from? Should I go back to stock? Should I contact customer service?

What did you do before the phone crashes ?
I think you probably should flash the stock ROM and wait for an other crash... or not.

Jb-kun said:
What did you do before the phone crashes ?
I think you probably should flash the stock ROM and wait for an other crash... or not.
Click to expand...
Click to collapse
I haven't done anything special. I think that the first time I was playing on candy crush. The second time I was just looking at pictures in my gallery.
I was using the ROM without any tweaks or extra modules such as Xposed. Just regular use.
Update on my situation: I switched back to stock ROM and it seems to work OK for now (it has been 4 days). So I will wait and see if new problems happen. By the way, it was extremely difficult for me to get back to Stock directly from fulmics ROM. I tried several methods that I have found on xda based on LGUP or LG Flash tool without success. For some reason I was not able to connect the phone to my PC in download mode.
The only way that I found was to use a nandroid backup that I did just after rooting the phone and that was based on stock ROM.

shewshain said:
I haven't done anything special. I think that the first time I was playing on candy crush. The second time I was just looking at pictures in my gallery.
I was using the ROM without any tweaks or extra modules such as Xposed. Just regular use.
Update on my situation: I switched back to stock ROM and it seems to work OK for now (it has been 4 days). So I will wait and see if new problems happen. By the way, it was extremely difficult for me to get back to Stock directly from fulmics ROM. I tried several methods that I have found on xda based on LGUP or LG Flash tool without success. For some reason I was not able to connect the phone to my PC in download mode.
The only way that I found was to use a nandroid backup that I did just after rooting the phone and that was based on stock ROM.
Click to expand...
Click to collapse
You can also use the Stock rom flashable from twrp. So you can wipe the system partition and get a "better situation" than a nandroid backup that should be with an old version.
Or use this that has also root and other improvements.

shewshain said:
Hi.
I have a problem with my D855. My phone is rooted and runs the fulmics ROM. Everything was working fine, , on Fulmics 5.3, except than one day, I was using my phone normally and then it crashed. I saw the phone rebooting, but for some reason it got stuck. The phone tried to boot unsuccessfully until the "firmware update" went through, after what it reboots again (unsuccessfully) and so on.
At that time, I was able to access twrp, do some backup, and flash properly with a downgraded version of fulmics (from 5.3 to 4.1).
It was able to boot again and use my phone like before. Yet, after one month of usage, the same problem happened on version 4.1. The phone crashed and now cannot boot.
Any idea of where it is coming from? Should I go back to stock? Should I contact customer service?
Click to expand...
Click to collapse
Same problem here. Normal usage suddenly started to reboot and now it's stuck in boot loop

Coming from Fulmics too - stopped working one fine day.
Now, continues to boot-loop at the initial LG screen. Trying to get into the recovery shows me the the 'Factory Reset' screen, but beyond that leads to boot-loops again. Even the Download mode loops!
I'm at my wits end without a solution in sight.

Blysterk said:
You can also use the Stock rom flashable from twrp. So you can wipe the system partition and get a "better situation" than a nandroid backup that should be with an old version.
Or use this that has also root and other improvements.
Click to expand...
Click to collapse
Thank you for this advice. I was able to update my stock ROM after the Nandroid backup through LGUP, but your method would have been faster.
But anyway, I am waiting to see if I am stuck with bootloops again, using non-root stock version, so I can send it to customer service if this happen again.
AhmadAlmousa said:
Same problem here. Normal usage suddenly started to reboot and now it's stuck in boot loop
Click to expand...
Click to collapse
abourdeau said:
I have the exact same problem, I even bought a second battery with no success.
Click to expand...
Click to collapse
Are you using Fulmics ROM as well? Can you have access to TWRP? I was able to connect to a PC in the recovery mode and to transfer files before flashing, in case you need some basic backup...

prakhargr8 said:
Coming from Fulmics too - stopped working one fine day.
Now, continues to boot-loop at the initial LG screen. Trying to get into the recovery shows me the the 'Factory Reset' screen, but beyond that leads to boot-loops again. Even the Download mode loops!
I'm at my wits end without a solution in sight.
Click to expand...
Click to collapse
Silly question, but are you sure that you selected "Yes" when the screen asks you about factory reset? you have to press "volume down" and the "power button", since the default answer is no.

shewshain said:
Silly question, but are you sure that you selected "Yes" when the screen asks you about factory reset? you have to press "volume down" and the "power button", since the default answer is no.
Click to expand...
Click to collapse
Yes, of course I was able to access TWRP successfully earlier.
Curiously enough, the phone boot-loops in regular startup, Download mode and trying to get to recovery. However, it doesn't restart itself and fall into a loop, while on the Factory Reset menu. Am I correct in assuming that the battery could not be the root cause of the overall problem? Because if it was, it would likely loop even on this Factory Reset menu as well as far as I understand.
Unfortunately, the phone restarts as soon as it lands in the Download mode so I cannot even restore to stock.
EDIT: Okay, weirdly enough it just booted and reached the homescreen before restarting again. What I did was let it charge to a 100% and tried booting while plugged in. Could it be the battery after all? Though this exact set of steps hasn't been helpful before.

Trying to update while rooted...

Hello,
today I accidentally tapped on "Update" (to 7.1.1) on my rooted Nexus 5X... Something you usually shouldn't do, but it was 2am and I was tired and.... Doesn't matter. After this my phone rebooted and almost instantly showed the dead android with the message "No command". And now I'm stuck there. After rebooting I still land there.
Since the error message almost instantly appeared and since I still can boot into TWRP (3.0.2-2), I think the update wasn't installed and I hope to find a way to avoid the factory reset of my phone. Do you have some tips or possible solutions what I should do in this case?
Thank you for your help.

Its odd this happened, when rooted and twrp installed. in my experience, the update will just simply fail and it will boot back up.... in your case, it sounds like something flashed but the phone didnt like it.... All I can think of is if you cant get into twrp, boot into fastboot and flash the factory image from google, you will loose all data though.....
EDIT, RE-READ you post, if you CAN get into TWRP, try flashing a backup... you should have a backup I hope, lol... First rule of root and flashing is make a backup asap....LOL

When I rooted my phone I did a backup. But the problem is, it was several months ago. So I tried the only method I could save all my data. It wasn't safe, I knew this, but no risk no fun.
My solution was: Download the ota update from Google and flash it with TWRP... Voila! My phone boots properly with the new update... But this method is like I mentioned before not safe and can probably cause a boot-loop with an overwritten recovery. I had to flash my recovery again, but everything works fine now.