Stuck in Bootloop, reboots every 15 seconds, holding power button does not stop it - Lenovo P2 Questions & Answers

The first problem I encountered while rooting my phone was that TWRP wouldn't stick, even though I didn't choose read only (ie i allowed it to make system modifications on the first TWRP boot) after rebooting
and booting back into recovery I would boot into stock recovery, instead of TWRP. So I tried flashing twrp, booting into it and rooting the phone, which was successful!
THE ROOT was successful, TWRP still didn't stick, every time I want to boot into TWRP I have to boot into it via fastboot.
Getting to the main problem, I booted into twrp, flashed a custom rom and got stuck in a bootloop while rebooting. It reboots every 15 seconds, I have kept the power button pressed for almost 2 minutes it doesn't stop the bootloop, I tried other combinations of vol buttons and power buttons does nothing.
One weird thing is that while it's in the loop I just have to press the vol down button and it boots into fastboot (as opposed to both the power button and vol down) when I boot into fastboot it stays there for about 6-7 seconds before rebooting, I tried booting into twrp through fastboot, but before I am able to enter the decryption password to start twrp, the phone reboots.
Should I let it run out of battery? will that stop the bootloop? I have a backup in twrp but I can't access twrp!
Does anyone have a solution?
[update] I let it run out of battery and on charging it continued the bootloop, with great difficulty i managed to install stock img file but the device just wont quit the bootloop

LeonDsouza123 said:
The first problem I encountered while rooting my phone was that TWRP wouldn't stick, even though I didn't choose read only (ie i allowed it to make system modifications on the first TWRP boot) after rebooting
and booting back into recovery I would boot into stock recovery, instead of TWRP. So I tried flashing twrp, booting into it and rooting the phone, which was successful!
THE ROOT was successful, TWRP still didn't stick, every time I want to boot into TWRP I have to boot into it via fastboot.
Getting to the main problem, I booted into twrp, flashed a custom rom and got stuck in a bootloop while rebooting. It reboots every 15 seconds, I have kept the power button pressed for almost 2 minutes it doesn't stop the bootloop, I tried other combinations of vol buttons and power buttons does nothing.
One weird thing is that while it's in the loop I just have to press the vol down button and it boots into fastboot (as opposed to both the power button and vol down) when I boot into fastboot it stays there for about 6-7 seconds before rebooting, I tried booting into twrp through fastboot, but before I am able to enter the decryption password to start twrp, the phone reboots.
Should I let it run out of battery? will that stop the bootloop? I have a backup in twrp but I can't access twrp!
Does anyone have a solution?
[update] I let it run out of battery and on charging it continued the bootloop, with great difficulty i managed to install stock img file but the device just wont quit the bootloop
Click to expand...
Click to collapse
1. Try flashing new recovery image using TWRP booted via fastboot.
2. Does your phone had contact with any fluid or was in place with high humidity level for longer time? Your power button is short circuited. In other words it is in pressed state all the time. I had same problem on my previous P2 when I came from 1h running session in light rain. Some sweat and/or water got inside my volume down button and same thing happened.
In my case the phone button recovered itself after drying and clicking it a lot of times

Kielbek said:
1. Try flashing new recovery image using TWRP booted via fastboot.
2. Does your phone had contact with any fluid or was in place with high humidity level for longer time? Your power button is short circuited. In other words it is in pressed state all the time. I had same problem on my previous P2 when I came from 1h running session in light rain. Some sweat and/or water got inside my volume down button and same thing happened.
In my case the phone button recovered itself after drying and clicking it a lot of times
Click to expand...
Click to collapse
I can't access TWRP as the phone doesn't give me enough time to enter the password for decryption, which is asked at the start every time you boot into TWRP, I get like 5 seconds in TWRP before the phone reboots
It is possible that the power button is spoilt as I have sweaty hands...

LeonDsouza123 said:
I can't access TWRP as the phone doesn't give me enough time to enter the password for decryption, which is asked at the start every time you boot into TWRP, I get like 5 seconds in TWRP before the phone reboots
It is possible that the power button is spoilt as I have sweaty hands...
Click to expand...
Click to collapse
That's the reason. I know that pain. You should try pressing that button with different pressure (but be careful) and move you finger while doing it. Maybe it will recover itself. If not you should find someone trusted who will open the phone and clean the buttons from the inside. It's a shame that Lenovo just left this construction vunerable like that.
After you get your P2 working properly again then just buy case that will cover whole buttons to prevent situations like this next time. Also make sure to clean it regullary inside.

Help me
If you found your way out then help me

Related

Phone stuck in TWRP recovery lock screen and can't force power-down

I am in a bit of a predicament. When I tried power-off my phone from the TWRP reset menu TWRP froze up. I could click any of the buttons on screen (the clicking/tapping animation did go off) but got no repsonse. When I tried to do a forced power-off by holding the power button, the only thing that happened was the screen locked. Now I am stuck on the lock screen because for some reason the phone won't unlock when I slide to unlock it. Am I screwed and will have to wait until the battery goes dead to be able to get back to the bootloader? I tried to flash TWRP 2.8.6.0 inside TWRP but it flashed to the boot partition instead. I have a backup but I need to first be able to flash the new recovery to restore it.
Press vol up+vol down + power button for 15 sec or more
When screen goes black
Press voldown + power to enter bootloader
Thanks for the quick response. Sadly I ended up calling it a night soon after posting so I ended up letting the battery die.

Htc desire 526g stuck in boot loop

Hi guys, months ago i rooted my HTC 526G with Kingoroot. I later tried to update the software over wifi. It updated but in restarting its now stuck in boot screen and sometimes goes into recovery by itself. Is there a way I can revive the firmware? Any help appreciated
HTC Desire 526G
I have problem like this ....cant fix it
Warning/Disclaimer: This will erase everything you have on the phones internal memory. (if you have play store set up right, you can just log back in afterwards and it will pull all your data/apps back, however if you don't, make sure to backup any contacts, data, ect that may be on the phones storage before attempting this) (then again, if you were already trying to root, you should have had everything backed up already anyway )
Charge the device to at least 50% (or an hour or two at least if the battery was completely dead)
Hold the Volume Down Button, Press power button, keep holding the volume down button
Phone should boot into HBOOT or Download mode,
use the volume up and down buttons to highlight Recovery Mode
press power button to select Recovery Mode
Phone will reboot with a red triangle icon, press all three buttons at the SAME time (vol up, vol down, power)
use the volume up and down buttons to highlight Clear Data (Factory Reset) press power button to select, let it finish clearing /data/ and /cache/
Once this has completed, Pull the battery out, let it sit for like 30 seconds without the battery
Put battery back in
hold power button for a while until it vibrates, release power button
let it sit at the htc boot screen for 10 minutes phone should eventually move to the verizon boot screen (if it goes over 10 minutes on the htc screen, try procedure again)
Post here if you have any trouble.
Still have problems
wassti said:
Warning/Disclaimer: This will erase everything you have on the phones internal memory. (if you have play store set up right, you can just log back in afterwards and it will pull all your data/apps back, however if you don't, make sure to backup any contacts, data, ect that may be on the phones storage before attempting this) (then again, if you were already trying to root, you should have had everything backed up already anyway )
Charge the device to at least 50% (or an hour or two at least if the battery was completely dead)
Hold the Volume Down Button, Press power button, keep holding the volume down button
Phone should boot into HBOOT or Download mode,
use the volume up and down buttons to highlight Recovery Mode
press power button to select Recovery Mode
Phone will reboot with a red triangle icon, press all three buttons at the SAME time (vol up, vol down, power)
use the volume up and down buttons to highlight Clear Data (Factory Reset)
Once this has completed, Pull the battery out, let it sit for like 30 seconds without the battery
Put battery back in
hold power button for a while until it vibrates, release power button
let it sit at the htc boot screen for 10 minutes phone should eventually move to the verizon boot screen (if it goes over 10 minutes on the htc screen, try procedure again)
Post here if you have any trouble.
Click to expand...
Click to collapse
i've done the procedure but unluckly i'm still having this problem, did someone fix the loop with this method? should i just wait for custom roms? :crying:
I had it happen to me after trying to root with just about every tool out there, mine would boot up but wouldn't go past the htc boot screen white background green htc. After I cleared the data a few times (at least 3) it came back up, try the procedure more than once. Also be patient and wait the full 10 minutes for it to come back up, sometimes it can be slow to load for the first time after this kind of wipe.
wassti said:
I had it happen to me after trying to root with just about every tool out there, mine would boot up but wouldn't go past the htc boot screen white background green htc. After I cleared the data a few times (at least 3) it came back up, try the procedure more than once. Also be patient and wait the full 10 minutes for it to come back up, sometimes it can be slow to load for the first time after this kind of wipe.
Click to expand...
Click to collapse
Try to root with "PhilZ Recovery by Ajit", search on google, i don't remember where i have download it, but it is an .exe file.
After you install it on your computer, you select USB debugging, and connect your phone to the computer, the rest of the process is auto.
After the installation process, the phone will autoreboot in recovery, here you will select ---> Advanced Function---> RE-root System (SuperSU).
After that, reboot, and install SuperSU from GooglePlay.
Success.
Root without boot loop (you may want to wipe Dalvid Cache before reboot after selecting root).
I hope this works for you ( it worked for me HTC desire 526g ).
Have a nice day.
IF you dont find the Philz, contact me, i wil send it to you.
Philz Recovery by ajit is designed for devices using the Mediatek processor; Sadly our 526 (no g, no +) uses a qualcomm processor. I do not recommend anyone to attempt to use "Philz recovery by Ajit" to attempt to root their HTC 526 as at best it will fail and at worse it will flash a non-compatible recovery and turn your device into a hard-brick.
wassti said:
Philz Recovery by ajit is designed for devices using the Mediatek processor; Sadly our 526 (no g, no +) uses a qualcomm processor. I do not recommend anyone to attempt to use "Philz recovery by Ajit" to attempt to root their HTC 526 as at best it will fail and at worse it will flash a non-compatible recovery and turn your device into a hard-brick.
Click to expand...
Click to collapse
I know...i said it is for HTC 526G.
Yep, I know you said it; just needed to clarify for other members so there is no confusion if someone comes here from a google search or what not
This forum is for 526 only, not the g or +
Bricked
I tried to wipe, but it still staing on htc screen...can someone do a backup or something and send me a link and reply me. i need it
sorry for bad english
I have the same problem please help us
emwakishi said:
Hi guys, months ago i rooted my HTC 526G with Kingoroot. I later tried to update the software over wifi. It updated but in restarting its now stuck in boot screen and sometimes goes into recovery by itself. Is there a way I can revive the firmware? Any help appreciated
Click to expand...
Click to collapse
I've exactly the same problem... does anybody have a rom for this model?
emwakishi said:
Hi guys, months ago i rooted my HTC 526G with Kingoroot. I later tried to update the software over wifi. It updated but in restarting its now stuck in boot screen and sometimes goes into recovery by itself. Is there a way I can revive the firmware? Any help appreciated
Click to expand...
Click to collapse
http://forum.xda-developers.com/chef-central/android/htc-desire-526g-bootloop-solution-t3241938
solve it by flashing rom using re recovery mode
I also got 526g+ totally finished only restarting I asked so many mobile repairing places no luck at all
PodolskiMeki said:
i've done the procedure but unluckly i'm still having this problem, did someone fix the loop with this method? should i just wait for custom roms? :crying:
Click to expand...
Click to collapse
Similar bootloop condition HTC 526g
wassti said:
Warning/Disclaimer: This will erase everything you have on the phones internal memory. (if you have play store set up right, you can just log back in afterwards and it will pull all your data/apps back, however if you don't, make sure to backup any contacts, data, ect that may be on the phones storage before attempting this) (then again, if you were already trying to root, you should have had everything backed up already anyway )
Charge the device to at least 50% (or an hour or two at least if the battery was completely dead)
Hold the Volume Down Button, Press power button, keep holding the volume down button
Phone should boot into HBOOT or Download mode,
use the volume up and down buttons to highlight Recovery Mode
press power button to select Recovery Mode
Phone will reboot with a red triangle icon, press all three buttons at the SAME time (vol up, vol down, power)
use the volume up and down buttons to highlight Clear Data (Factory Reset) press power button to select, let it finish clearing /data/ and /cache/
Once this has completed, Pull the battery out, let it sit for like 30 seconds without the battery
Put battery back in
hold power button for a while until it vibrates, release power button
let it sit at the htc boot screen for 10 minutes phone should eventually move to the verizon boot screen (if it goes over 10 minutes on the htc screen, try procedure again)
Post here if you have any trouble.
Click to expand...
Click to collapse
My phone was also rooted using kingroot. I received an OTA update and I downloaded it. Once the download was complete, the phone restarted and got bootlooped. Occasionally, it goes into recovery. I tried factory resetting it several times as mentioned in the solution. But each time I turn the phone ON again after factory reset, it is looping. Its not stuck at the boot logo. Instead it reboots automatically and in some cases to recovery. So the wait-for-10-mins thing is not working for me.
1. I received a stock ROM from the Russian section of XDA. Will flashing that ROM using the stock recovery using "install update from SD card" help me recover my phone from bootloop?
2. Will flashing the stock ROM unroot the phone? Presently, even after the factory resetting, "check the software partition" option in recovery returns a message "error - system has root". So I was hoping that unroofing might fix the problem. Will it?
3. If the above method fails, is there any other method? Like flashing a custom recovery or flashing a custom ROM etc?
Please help me fix the phone. Thanks in advance.
I am experiencing the same problem and have tried everything to avail, will this devise ever work again its still stuck with a white screen and green HTC
negomo said:
I am experiencing the same problem and have tried everything to avail, will this devise ever work again its still stuck with a white screen and green HTC
Click to expand...
Click to collapse
Hey negomo. I just fixed the phone yesterday. It seems that installing an OTA update while the phone is rooted can result in a bootloop or bricking(as in my case). I fixed this issue by flashing a stock ROM of the HTC 526g which I got from another Russian forum in XDA. Anyway I am posting the link of that stock ROM here.
( I am not allowed to post link. So please delete the spaces to get the actual link)
h t t p s :// yadi.sk/ d/gNKBahgZiwGmo
Once you download it do the following procedure
1. Copy it to an SD card and insert the card in your phone.
2. Press power button+volume up key button to enter HBOOT menu (while turning on the phone, press power and vol up button instead of power button alone)
3. Choose recovery option and press volume down to enter
4. Press power button once to enter recovery
5. Choose "install update from SD card"
6. Wait till it finishes installation
7. Wipe cache
8. Reboot phone
PS: I had already done a factory reset from recovery menu. I don't know if that had helped.
This will bring your phone back to life. Give around 10 mins for the first boot.
I hope I was able to help you.
Hit thanks if I did.
how to know my device 526g or 526
---------- Post added 24-06-2016 at 12:05 AM ---------- Previous post was 23-06-2016 at 11:51 PM ----------
https://www.imageupload.co.uk/image/ct0U
thx you are pro ??my problem solved ??

No hardware buttons work!!

Hi
Could some one tell me why i cant get in recovery or factory mode with hardware buttons, i am on stock 10d with twrp recovery installed and rooted wirh super su through twrp. I installed twrp through adb with normal command and device works just fine through reboot apps from os, boots in recovery,fastboot etc just fine,same through adb commands.
But there's no hardware combo or anyrhing working when trying to enter recovery or factory reset working at all?
Tryied every combo i could find saying how to from internet.
It just boot up in os as usual.
And phone dosen't reset while holding power button for 10s + either
It's a bit scary because bootloop is going to come eventually for sure and then there's no rescuing avalible
Could someone plz tell me whats going on?
Im new to g4 so, some help would be nice.
Thanks in advace
It's a bit tricky, to be honest.
• Power off your phone
• Hold "Volume-Down" and keep your "Power-Button" pressed. So you should keep both pressed, until the 1st LG logo appears
• Now just leave the "Power-Button" for ~1 second whilst kept the "Volume-Down" button still pressed, press now the "Power-Button" again and keep holding it
You're now forced to deal with the standard-ui from LG. Go to "Yes" and again "Yes". TWRP now boots and you should be fine .
Edit: Just my tiny story... I watched several videos and also had a nasty bootloop. I was afraid, I now bricked my phone. But a nice user showed me this way and this was the only way, I got my phone recovered.

PLease HELP!!! Bricked...BootLooping... ramdump er ror when booting into bootloader

Wash flashing rom in twrp. Rebooted and was bootlooping at the google splash screen. When trying to boot into bootloader getting a ramdump writing to ext4 file instead of bootloader...Please help!!
can you boot into bootloader or recovery or regular boot? anything?
Nugg14 said:
Wash flashing rom in twrp. Rebooted and was bootlooping at the google splash screen. When trying to boot into bootloader getting a ramdump writing to ext4 file instead of bootloader...Please help!!
Click to expand...
Click to collapse
Ever since I instead 7.1.2 mine shows that stupid ram dump thing , just keep holding volume down and power button it will eventually go into bootloader mode. One time for me it seemed like forever holding the buttons. I also here if you flash stock to both slots that gets rid of that ram dump message. I havn't got around to trying that yet. Don't think it's that big a deal
Nugg14 said:
Wash flashing rom in twrp. Rebooted and was bootlooping at the google splash screen. When trying to boot into bootloader getting a ramdump writing to ext4 file instead of bootloader...Please help!!
Click to expand...
Click to collapse
Hello...
Power down your device, hold power + volume down only two or three seconds. Should boot into bootloader. That's how it booted into bootloader when I was having the same issue.
Good luck...
mac796 said:
Ever since I instead 7.1.2 mine shows that stupid ram dump thing , just keep holding volume down and power button it will eventually go into bootloader mode. One time for me it seemed like forever holding the buttons. I also here if you flash stock to both slots that gets rid of that ram dump message. I havn't got around to trying that yet. Don't think it's that big a deal
Click to expand...
Click to collapse
Hey,
First times I installed Pure Nexus, i would always reboot before installing TWRP zip (I know I was dumb), ended having RAM dump all the time. Flashing both slots stock​ fixed it. :good:
Cheers...
I had a similar issue and it seems that when I shut the phone off I have to wait a bit over 60 seconds after screen turns off before pressing power+vol down. I'm other words, if I shut phone off and it takes more than 3-4 seconds of holding power+vol down and it doesn't vibrate to indicate power on, I simply wait another 30 sec and try again and it works right away. Otherwise if I keep holding it does the same dump it does for you.

Help-frozen in TWRP [solved]

I've got one of those 10.5 models (SM-T807R4, the US Cellular version) that suffers from the screen freezing problem which requires either pushing the power button twice or closing an opening the case. In an effort to fix the problem, I rooted it and installed TWRP 2.8.5.0 and was able to successfully boot into TWRP. I backed up the boot loader and the system using TWRP and the entire tablet with Titanium Backup.
I just booted into TWRP and was ready to wipe everything and install a new ROM when the screen froze. I can't unfreeze it with the power button or by closing and opening the case. When I pushed the power button, it locked TWRP but since the screen is frozen, I can't swipe to unlock it. I tried the power+home+vol down sequence and that didn't work. I have held the power button down for a minute or two (until my fingers gave out) and that didn't work either. I hooked it to the PC but the PC doesn't see it so Odin or ADB or Fastboot don't do anything. The only upside to this is that now I'm pretty sure the screen freezing problem is hardware rather than software so flashing a new ROM probably won't help.
At any rate, I need suggestions to shut it down, given that nothing I have tried has worked. Then I'll see if I can sell it as a boat anchor!
================
Well, I got finally got it to boot with the power+home+vol down sequence. Will try TWRP again later.

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