HTC 820u Dual SIM China - Desire 820 Q&A, Help & Troubleshooting

Hi,
I have the China variant of the HTC 820. I unlocked bootloader, flashed TWRP and rooted it and it was working fine on Android 4.4. I'm not sure what I did but at some point I've lost the OS. I've flashed a KK TWRP a few times off this forum, but it just stays at the white HTC boot screen. I cannot get it to boot any further.
Any ideas?

gareth7o9 said:
Hi,
I have the China variant of the HTC 820. I unlocked bootloader, flashed TWRP and rooted it and it was working fine on Android 4.4. I'm not sure what I did but at some point I've lost the OS. I've flashed a KK TWRP a few times off this forum, but it just stays at the white HTC boot screen. I cannot get it to boot any further.
Any ideas?
Click to expand...
Click to collapse
wipe system, data, cache.. flash your twrp backup, then clear data, cache, dalvik cache. should get you fixed.

Related

[Q] ViperOne won't boot

I've got the AT&T HTC One M8. Bootloader unlocked, rooted, S-off, TWRP recovery.
I'm trying to flash ViperOne M8 and done just about everything I can think of but without any luck. It completes install, but upon reboot, just shows the white screen with HTC logo and red text, and then reboots. At that point, I'm able to use ADB to get into recovery but can't boot into ROM.
I've been trying ViperOne 1.6.0, and currently downloading an older version to see if that'll work.
I tried Android Revolution HD and InsertCoin. Both worked fine, so I know I'm able to flash custom ROMs just fine, but not ViperOne. Any ideas?
Tried flashing .img with fastboot and .zip with TWRP, both cause boot loop.
awkwardness said:
I've got the AT&T HTC One M8. Bootloader unlocked, rooted, S-off, TWRP recovery.
I'm trying to flash ViperOne M8 and done just about everything I can think of but without any luck. It completes install, but upon reboot, just shows the white screen with HTC logo and red text, and then reboots. At that point, I'm able to use ADB to get into recovery but can't boot into ROM.
I've been trying ViperOne 1.6.0, and currently downloading an older version to see if that'll work.
I tried Android Revolution HD and InsertCoin. Both worked fine, so I know I'm able to flash custom ROMs just fine, but not ViperOne. Any ideas?
Tried flashing .img with fastboot and .zip with TWRP, both cause boot loop.
Click to expand...
Click to collapse
Start from the first release and do the OTA Updates up to 1.6.0.
awkwardness said:
I've got the AT&T HTC One M8. Bootloader unlocked, rooted, S-off, TWRP recovery.
I'm trying to flash ViperOne M8 and done just about everything I can think of but without any luck. It completes install, but upon reboot, just shows the white screen with HTC logo and red text, and then reboots. At that point, I'm able to use ADB to get into recovery but can't boot into ROM.
I've been trying ViperOne 1.6.0, and currently downloading an older version to see if that'll work.
I tried Android Revolution HD and InsertCoin. Both worked fine, so I know I'm able to flash custom ROMs just fine, but not ViperOne. Any ideas?
Tried flashing .img with fastboot and .zip with TWRP, both cause boot loop.
Click to expand...
Click to collapse
fastboot erase cache
load recovery and choose advanced wipe, choose cache, dalvik, data, system. NOT int or ext.
reinstall

[Q] Canvas A1 never-ending Bootloop.

Hi guys. Recently my Canvas A1 (Android One) got stuck in bootloop. In order to fix it, I flashed it with the stock ROM provided after unlocking bootloader.
However, even after doing that, on reboot bootloop came back. It got stuck on the animation screen after the Micromax logo and restarted again, and this goes on and on.
So, I flashed it with Wormhole ROM after that. But still, it got stuck at splash screen.
I have tried all this along with wiping dalvik cache, system cache etc.
I have CWM installed on the phone.
I tried to flash it once more with stock ROM but it still got stuck as before. Please help! What should I do?
why you flashed it? you should have claim the warranty.
skd1993 said:
Hi guys. Recently my Canvas A1 (Android One) got stuck in bootloop. In order to fix it, I flashed it with the stock ROM provided after unlocking bootloader.
However, even after doing that, on reboot bootloop came back. It got stuck on the animation screen after the Micromax logo and restarted again, and this goes on and on.
So, I flashed it with Wormhole ROM after that. But still, it got stuck at splash screen.
I have tried all this along with wiping dalvik cache, system cache etc.
I have CWM installed on the phone.
I tried to flash it once more with stock ROM but it still got stuck as before. Please help! What should I do?
Click to expand...
Click to collapse
Remove battery, sims and mmc
Wait atleast 1-2 minutes
Put all back
Now go to recovery and wipe all
Install your stable rom zip
Reboot.
It seems that your phone is bricked. I think that you are under warranty and you should go to service centre. You can also flash a custom ROM
skd1993 said:
Hi guys. Recently my Canvas A1 (Android One) got stuck in bootloop. In order to fix it, I flashed it with the stock ROM provided after unlocking bootloader.
However, even after doing that, on reboot bootloop came back. It got stuck on the animation screen after the Micromax logo and restarted again, and this goes on and on.
So, I flashed it with Wormhole ROM after that. But still, it got stuck at splash screen.
I have tried all this along with wiping dalvik cache, system cache etc.
I have CWM installed on the phone.
I tried to flash it once more with stock ROM but it still got stuck as before. Please help! What should I do?
Click to expand...
Click to collapse
Sir, before flashing any ROM wipe all data and dalvik cache
Try this this may help you:thumbup:
how bro
Mohitash said:
Remove battery, sims and mmc
Wait atleast 1-2 minutes
Put all back
Now go to recovery and wipe all
Install your stable rom zip
Reboot.
Click to expand...
Click to collapse
flash your phone with sp flash tool work well
Sushant Rohan said:
Sir, before flashing any ROM wipe all data and dalvik cache
Try this this may help you:thumbup:
Click to expand...
Click to collapse
my android one (micromax) stuck on boot animations .i cant go to boot selections......what to do ..os is marshmallow
android one stuck in boot loop.
hi,
my android one had received OTA update on 1 may. after that once due to low batt it got switched off automatically and since then it is not booting up. i tried charging it full and also tried to flash it using sp tools. but nothing happens once i click the download button. the mobile dosent detect with its battery removed also. i even tried factory reset but it didn't work.
pl help.
I have flashed custom Rom But
skd1993 said:
Hi guys. Recently my Canvas A1 (Android One) got stuck in bootloop. In order to fix it, I flashed it with the stock ROM provided after unlocking bootloader.
However, even after doing that, on reboot bootloop came back. It got stuck on the animation screen after the Micromax logo and restarted again, and this goes on and on.
So, I flashed it with Wormhole ROM after that. But still, it got stuck at splash screen.
I have tried all this along with wiping dalvik cache, system cache etc.
I have CWM installed on the phone.
I tried to flash it once more with stock ROM but it still got stuck as before. Please help! What should I do?
Click to expand...
Click to collapse
I have flashed official 6.0 after bootloop but no service(emergency call) after that.
I have also tried to install CM13 but the problem is still there
my phones warranty is over now.
please help me .
Sushant Rohan said:
Sir, before flashing any ROM wipe all data and dalvik cache
Try this this may help you:thumbup:
Click to expand...
Click to collapse
My Karbonn Android One also got stuck in the bootloop.
Tried:
1) Wipe data/factory reset
2) Wipe cache partition
3) Mount/System
No improvements. Any suggestions please!!!!
Same here.. [Solved]
skd1993 said:
Hi guys. Recently my Canvas A1 (Android One) got stuck in bootloop. In order to fix it, I flashed it with the stock ROM provided after unlocking bootloader.
However, even after doing that, on reboot bootloop came back. It got stuck on the animation screen after the Micromax logo and restarted again, and this goes on and on.
So, I flashed it with Wormhole ROM after that. But still, it got stuck at splash screen.
I have tried all this along with wiping dalvik cache, system cache etc.
I have CWM installed on the phone.
I tried to flash it once more with stock ROM but it still got stuck as before. Please help! What should I do?
Click to expand...
Click to collapse
Hey,
Try this... Worked for my canvas a1...
1. Install Minimal ADB and fastboot (search google)..
2. Download universal sprout 4(or 8) stock rom from xda..
3. Use philz touch recovery and wipe cache in your mobile through recovery....
4. Now install your stock rom from .zip file..
5. That's it.... Reboot and your phone is back..!
Regards,
Aashif
Ashabilash said:
My Karbonn Android One also got stuck in the bootloop.
Tried:
1) Wipe data/factory reset
2) Wipe cache partition
3) Mount/System
No improvements. Any suggestions please!!!!
Click to expand...
Click to collapse
Just flash stock rom with pc or laptop and if you have custom recovery flash stable rom it will be fixed
how!?
Can someone tell me how m I going to install TWRP even my device stuck on bootloop and can't pass on it. I try the recovery method like factory data clear participation but doesn't even work. My device is firefly mobile plss tell me
markphaul13 said:
Can someone tell me how m I going to install TWRP even my device stuck on bootloop and can't pass on it. I try the recovery method like factory data clear participation but doesn't even work. My device is firefly mobile plss tell me
Click to expand...
Click to collapse
Turn off device completely, wait for 100 seconds and connect the turned off phone to the PC. Hold the Power and Volume Up button together. You will see a menu.
1) Select fastboot mode using volume buttons.
2)On your PC download adb and extract it anywhere and navigate there.
3)open command prompt in that directory and type fastboot devices.
4)you will see serial no. Of your phone if not try reconnecting phone and letting the drivers install.
5)Using Android one toolkit Flash TWRP.
6)Flash whatever new system you want and tadaa......

Bootloop after root via recovery (SuperSU Flash)

Hello guys,
I unlocked the bootloader, flashed TWRP and flashed the latest SuperSU zip file (2.65). After reboot it gets stuck at the HTC Logo. Wipe Cache / Dalvik, Factory Reset before and after flashing SuperSU did not help. Now it's stock with a nandroid backup but still want to get it rooted. It has a German Tmobile branding (for Germany) and runs on Android Version 6.0.
What can I do know?
Thanks!

stuck at boot logo

Hi, i unlocked bootloader using the htcdev method and worked fine.
I boot in fastboot and see im unlocked, i flash twrp latest version and go in recovery , i install supersu latest version, i delete cache dalvic cache and reboot. And thats all. Stuck there and now im trying to download the stock rom and reflash it and try again.
My phone is htc one m8 universal unlocked and updated to latest android 6 version available now.
What did i do wrong ? i dont get it. Its not my first phone to root. I did root more than 20 phones .............

Recovery stuck at HTC logo

Htc desire 820 single sim
android vers:4.4.4
software number 1.29.401.5
kernel version:3.10.28-ge3786f3
trying to get into recovery mode. but phone got Stuck at htc logo. Everything else is fine. i'm just missing recovery mode
here's what happen'd:
my phone Was rooted and it worked fine. but to install ota update i flashed the recovery which i got from ota updates Zip using flashify. the phone installed updates just fine. everything works except recovery mode. flashed recovery with twrp recovery again and still getting stuck at htc logo
that's what happen'd. hope you guys be able to help me. the reason i did all that was to upgrade my kitkat to lolipop
EDITh god.... i'm ashamed. fixed it by using the right Recovery...........
mnp63 said:
Htc desire 820 single sim
android vers:4.4.4
software number 1.29.401.5
kernel version:3.10.28-ge3786f3
trying to get into recovery mode. but phone got Stuck at htc logo. Everything else is fine. i'm just missing recovery mode
here's what happen'd:
my phone Was rooted and it worked fine. but to install ota update i flashed the recovery which i got from ota updates Zip using flashify. the phone installed updates just fine. everything works except recovery mode. flashed recovery with twrp recovery again and still getting stuck at htc logo
that's what happen'd. hope you guys be able to help me. the reason i did all that was to upgrade my kitkat to lolipop
EDITh god.... i'm ashamed. fixed it by using the right Recovery...........
Click to expand...
Click to collapse
Tighten the two volume buttons and the power button when a black screen appears to hold the volume- button and power, smart mustget into in the loader in the boot loader to choose reboot (assuming that the system is not removed) If the system removed or updates are not established, it is necessary to set from TWRP backup https://yadi.sk/d/fSWO21rIr4ETs 4.4.4 for HTC Desire 820n 1-sim Euro.In TWRP to do so !!! in TWRP recovery Wipe-advanced Wipe - note 5 crosses Swipe to Wipe,then in TWRP recovery Restore Storage, Internal Storage,MicroSDcard TWRP backup,Swipe to Restore. mod recovery 4.4.4 recovery stock 4.4.4.rar https://yadi.sk/d/uYJ6uTY4tKrtA

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