Related
I just reset mytouch 4g phone and during restart the recovery screen just come out but I can't move down or up anything on the screen it just stuck..
I just update cm to version 3 of something
please I really need help on this my phone is already S-off
when I plug the phone with USB it response something by HBOOT has changed to HBOOT USB PLUG
I use Stock Rom just update Kernal only
Need more specifics. "3 of something" is too vague.
If you flashed clockwork mod recovery 3 (the text is orange) while using a stock ROM you will have issues. Clockwork 3 is for gingerbread based ROMs only.
If that is so, download CyanogenMOD 7 RC1 and try to flash it. Rebooting may help get recovery working right again. If not, and you are unable to re-flash a ROM, you will need to use fastboot to re-flash a good recovery image.
Marine6680 said:
Need more specifics. "3 of something" is too vague.
If you flashed clockwork mod recovery 3 (the text is orange) while using a stock ROM you will have issues. Clockwork 3 is for gingerbread based ROMs only.
If that is so, download CyanogenMOD 7 RC1 and try to flash it. Rebooting may help get recovery working right again. If not, and you are unable to re-flash a ROM, you will need to use fastboot to re-flash a good recovery image.
Click to expand...
Click to collapse
when I upplug battery, and turn the phone on, it won't boot it just re direct to the Clockwork Mod screen and the screen lock volume up and down can't navigate anything power botton won't work tooo..I try to un plug battery again and turn on again the result is the same...
wibul_10 said:
when I upplug battery, and turn the phone on, it won't boot it just re direct to the Clockwork Mod screen and the screen lock volume up and down can't navigate anything power botton won't work tooo..I try to un plug battery again and turn on again the result is the same...
Click to expand...
Click to collapse
In clockwork you use the trackball to navigate. Volume buttons won't work.
Lakeshow423 said:
In clockwork you use the trackball to navigate. Volume buttons won't work.
Click to expand...
Click to collapse
no response on trackball too. it just stuck on this screen and can't move anywhere....any solution
Your attached image is of the Bootloader, not CWM Recovery.
The Bootloader is controlled by volume up / volume down to move between selections, and the power button is used to select.
jggimi said:
Your attached image is of the Bootloader, not CWM Recovery.
The Bootloader is controlled by volume up / volume down to move between selections, and the power button is used to select.
Click to expand...
Click to collapse
when I turn the phone on everytime it just show this bootloader and no response on all volume up/down and power button...only way to turn off is to unplug battery ....
You might see if the Bootloader can communicate with fastboot on your PC. If so, you will have options for un-bricking from your PC.
See http://forum.xda-developers.com/showthread.php?t=928370 for info on installing adb and fastboot to your PC, and using them.
Fastboot is designed to communicate with the bootloader. As far as I know, however, adb requires a functioning Android or Recovery system.
jggimi said:
You might see if the Bootloader can communicate with fastboot on your PC. If so, you will have options for un-bricking from your PC.
See http://forum.xda-developers.com/showthread.php?t=928370 for info on installing adb and fastboot to your PC, and using them.
Fastboot is designed to communicate with the bootloader. As far as I know, however, adb requires a functioning Android or Recovery system.
Click to expand...
Click to collapse
One more question, after following your advice, I found that I now can restart my phone again but when I shut down the phone and turn it on again it still stuck on bootloader screen all the times...any suggestion would be appreciate...
You can "restart my phone again" -- is it running Android at that point? If so, you can restore your phone to stock, and do a full factory reset, by putting the P15IMG.zip file on the root of your SD card and rebooting. The bootloader (if it is functional) should find it and begin the restore procedure.
Dowload, rename this, and stick it on your SD card, and reboot. If after a successful return to factory defaults, your phone still isn't working, the problem is likely not software.
http://www.filedropper.com/pd15imgglaciertmous1175312radio1228b60140e26030226mrelease155771signed
(Link borrowed from Phateless's .sig)
jggimi said:
You can "restart my phone again" -- is it running Android at that point? If so, you can restore your phone to stock, and do a full factory reset, by putting the P15IMG.zip file on the root of your SD card and rebooting. The bootloader (if it is functional) should find it and begin the restore procedure.
Dowload, rename this, and stick it on your SD card, and reboot. If after a successful return to factory defaults, your phone still isn't working, the problem is likely not software.
http://www.filedropper.com/pd15imgglaciertmous1175312radio1228b60140e26030226mrelease155771signed
(Link borrowed from Phateless's .sig)
Click to expand...
Click to collapse
I can't download it...need new link
anyway thank very much for your help
hi 2 all
I want to brief how made brick my tab step by step
first of all i had an Acer_A500_4.010.43_COM_GEN1 3.1 stock rom on my tab that i upgrade it to 3.2 Acer_A500_7.006.01_COM_GEN1 by tablet then i decided to root my tablet for installation custom rom and i downgrade to 3.01 rom by this typic http://forum.xda-developers.com/showthread.php?t=1276227 method 1 i reverted successfully and after rooting i installed and tested this 3 roms (taboonay 2.2-thor 14.2&light speed 1.07) but each one had some problems like google map or gps or rotation screen so i installed a 3.1hc stock rom Acer_A500_4.010.41_COM_GEN1 and rooted that worked good but i had mistake and i forget erase update.zip file from my sd card
4days ago Mistakenly I turn on my tablet with recovery mode and iconia automattically gone to update mode (rom installation) i did nothing but this opration was stopped at 80% and my wrong was here i could not be patient and shut down my tab by power button and i bricked my tablet
after that i test all method for unbrick it like not stable rom , Chinese and whitout Chinese roms using of stock rom like Acer_A500_4.010.38_COM_GEN1
without any success only in not stable rom processes gone to 95 % and then stoped and nothing
after update to chinese rom it stopped at 30 % with yellow triangle sign
and then happend something bad and i loose my CWM
NOW if i want to go to recovery mode by pressing power+vol down keys Iconia show me a message
secure boot: image SOS checksum fail!
and in normal booting I have a locked black screen with nonworking touchables button and android word at left top of screen and clock & 15% battery sometimes it show a message for shutting down
i cant go to setting menu for active my usb debugging and my pc do not recognize my tablet
i cant hard reset my tab because it hanged in 2 message for 30 mins and i cant go to recovery mode and customer services says your device is out of warranty because rotting that
but Fortunately I have my UID
excuse me for long story
any body help me please
thank all of you
that is amazing over 150 visit of this help request without any answer please give me a Proposal
thanks
I have a501 .....
http://forum.xda-developers.com/showthread.php?t=1419164
the chinese rom and checksum error are supposed to happen.
the chines rom is an old unstable version but is provided so we can root it to install cwm and flash a working rom.
after the checksum error you needed to power off and then using the buttons enter recovery mode and go to 'Fix checksum error' in advanced menu - after that reboot.
you should do the following:
a)go back and read the entire post on what to do because you missed the last part
or
b)try the backdoor method
---------- Post added at 12:21 PM ---------- Previous post was at 11:49 AM ----------
just read your entire post again...there's alot going on there isnt there?
have you tried flashing the update.zip again with 3.0.1 on it...get back to the chinese rom, from there install iconia root and root it. Then install cwm and you should be all good - if that doesnt work then use timmyDeans backdoor method it does it for you, all you need to do is install acer recovery installer to install cwm, backup the original stock recovery when the app asks you, you will need it to OTA Update successfully...
Doesn't flashing stock rom remove cwm?
bendystrawboy said:
Doesn't flashing stock rom remove cwm?
Click to expand...
Click to collapse
yeh i just had trouble when i OTA'd last nite on the 2nd update, had to flash stock before it would install, but i may have restored the wrong one from acer recovery installer beforehand...a definite possibility!!!
by flashing from method 1 my racovery mode came back again and i can recover only from update.zip
but when i want to install Extract_unBrick_UPDATE it stop at 30% and my tab goes to turn off and when i press power button it turnnig on and turn off very soon and can not boot
I test non stable rom and flash with this rom proccess goes to 90% and stop
what can i do now? this is my tablet screen
http://s1.picofile.com/file/7237922040/Photo_0007.jpg
http://s2.picofile.com/file/7237923010/Photo_0008.jpg
http://s1.picofile.com/file/7237924301/Photo_0009.jpg
thank u
darvis said:
by flashing from method 1 my racovery mode came back again and i can recover only from update.zip
but when i want to install Extract_unBrick_UPDATE it stop at 30% and my tab goes to turn off and when i press power button it turnnig on and turn off very soon and can not boot
I test non stable rom and flash with this rom proccess goes to 90% and stop
what can i do now? this is my tablet screen
http://s1.picofile.com/file/7237922040/Photo_0007.jpg
http://s2.picofile.com/file/7237923010/Photo_0008.jpg
http://s1.picofile.com/file/7237924301/Photo_0009.jpg
thank u
Click to expand...
Click to collapse
Unbrick it using my tool listed here, guarantee you it will fix your problems.
Just download it and follow the instructions in the readme.pdf.
http://forum.xda-developers.com/showpost.php?p=20680452&postcount=137
timmyDean said:
Unbrick it using my tool listed here, guarantee you it will fix your problems.
Just download it and follow the instructions in the readme.pdf.
http://forum.xda-developers.com/showpost.php?p=20680452&postcount=137
Click to expand...
Click to collapse
hello master
i am so glad for your attention to my problem
i use from your rom before that pictures are shown above and my tablet show ((pass)) and pc show congratulation to me but u see nothing change but Hopefully that fix my cvm problem an now ican use from update.zip rom but my screen didn't any change and i cant do anything by tablet
I don't know anything about backdoor method is it useful for my problem ?
i have 2 problems
1-i cant wipe and erase my whole data even when i press vol+ and power keys and toggle lock screen button it shown two message for erasing cash but it do anything
2-my PC don't recognize my tablet i have to flash your rom with APX mode
i have a question do your rom need to CUPID file ? because there isn't any cupid file in your Rom
please help me sir because you are a greet master
thanks
darvis said:
hello master
i am so glad for your attention to my problem
i use from your rom before that pictures are shown above and my tablet show ((pass)) and pc show congratulation to me but u see nothing change but Hopefully that fix my cvm problem an now ican use from update.zip rom but my screen didn't any change and i cant do anything by tablet
I don't know anything about backdoor method is it useful for my problem ?
i have 2 problems
1-i cant wipe and erase my whole data even when i press vol+ and power keys and toggle lock screen button it shown two message for erasing cash but it do anything
2-my PC don't recognize my tablet i have to flash your rom with APX mode
i have a question do your rom need to CUPID file ? because there isn't any cupid file in your Rom
please help me sir because you are a greet master
thanks
Click to expand...
Click to collapse
V3 which I pointed you to is STOCK 3.2.1 with root. Once you get there you will be stable. If you want CWM then you will have to install it. It is NOT in the flash because the flash is stock ONLY with root. But since you have root, you can install CWM.
The serial number does NOT need to be saved in any file. Just follow the instructions.
timmyDean said:
V3 which I pointed you to is STOCK 3.2.1 with root. Once you get there you will be stable. If you want CWM then you will have to install it. It is NOT in the flash because the flash is stock ONLY with root. But since you have root, you can install CWM.
The serial number does NOT need to be saved in any file. Just follow the instructions.
Click to expand...
Click to collapse
sorry sir
I used your v3 rom and install it by apx mode it installed and I saw ((pass)) on my tablet after botting and after acer logo and android word i have same problem yet
http://s1.picofile.com/file/7238522040/Photo_0010.jpg
http://s2.picofile.com/file/7238522903/Photo_0011.jpg
http://s1.picofile.com/file/7238523331/Photo_0012.jpg
however thank you very much for your attention
sincerely yours
darvis said:
sorry sir
I used your v3 rom and install it by apx mode it installed and I saw ((pass)) on my tablet after botting and after acer logo and android word i have same problem yet
http://s1.picofile.com/file/7238522040/Photo_0010.jpg
http://s2.picofile.com/file/7238522903/Photo_0011.jpg
http://s1.picofile.com/file/7238523331/Photo_0012.jpg
however thank you very much for your attention
sincerely yours
Click to expand...
Click to collapse
Ok, now just download the stock image for your country and put it on your external sdcard. Use the power and volume + key which will launch stock recovery (which you now have flashed) and it will flash your tablet with the one located on your sdcard. This will have you back stock.
timmyDean said:
Ok, now just download the stock image for your country and put it on your external sdcard. Use the power and volume + key which will launch stock recovery (which you now have flashed) and it will flash your tablet with the one located on your sdcard. This will have you back stock.
Click to expand...
Click to collapse
sorry sir
what did you mean about power and volume + key?
do you mean power and vol down keys for recovery mode?
darvis said:
sorry sir
what did you mean about power and volume + key?
do you mean power and vol down keys for recovery mode?
Click to expand...
Click to collapse
You have a "volume" switch on top of your tab (long silver switch on left side)
You control volume from this. Vol+ make sound go up (the right side of it)
Press it on the left side, and volume goes quiet (vol-)
So, as he said, with the tablet OFF, hold the VOL+ side of the button, then select PWR (power)
You have 2 recovery modes.
1. CWM Recovery (vol- & Pwr) (after you have root and cwm installed)
2. Stock Acer recovery (vol+ & Pwr)
Step number 2 with the stock acer recovery, should install the stock rom you copied to your sd like TimmyDean said earlier.
Moscow Desire said:
You have a "volume" switch on top of your tab (long silver switch on left side)
You control volume from this. Vol+ make sound go up (the right side of it)
Press it on the left side, and volume goes quiet (vol-)
So, as he said, with the tablet OFF, hold the VOL+ side of the button, then select PWR (power)
You have 2 recovery modes.
1. CWM Recovery (vol- & Pwr) (after you have root and cwm installed)
2. Stock Acer recovery (vol+ & Pwr)
thanks a lot
Step number 2 with the stock acer recovery, should install the stock rom you copied to your sd like TimmyDean said earlier.
Click to expand...
Click to collapse
thank u sir
but there is a question
1-in CWM recovery we can use from Update.zip files
but in Stock Acer recovery (vol+&power ) which one of files must be copied at sd card ?
darvis said:
thank u sir
but there is a question
1-in CWM recovery we can use from Update.zip files
but in Stock Acer recovery (vol+&power ) which one of files must be copied at sd card ?
Click to expand...
Click to collapse
Answer me please
darvis said:
Answer me please
Click to expand...
Click to collapse
Please rewrite what you are trying to do. I have no idea what you are talking about?
Are you asking about stock recovery and flashing form a SD Card? If so, copy update.zip to your SD card and then run recovery. If you have CWM, then use it to select the update from the SD Card.
It's not clearly as to exactly what you have loaded and what you are trying to do?
LASTLY: You cannot take a backup from CWM and have the stock recovery install it. Stock recovery will only install update.zip which must be signed by ACER.
TD
timmyDean said:
Please rewrite what you are trying to do. I have no idea what you are talking about?
Are you asking about stock recovery and flashing form a SD Card? If so, copy update.zip to your SD card and then run recovery. If you have CWM, then use it to select the update from the SD Card.
It's not clearly as to exactly what you have loaded and what you are trying to do?
LASTLY: You cannot take a backup from CWM and have the stock recovery install it. Stock recovery will only install update.zip which must be signed by ACER.
TD
Click to expand...
Click to collapse
Hello sir
in upper post u tell me i must go to recover mode by pressing power & vol+
but only i can go to stock recovery with pressing power & vol-(not vol+)
is there any other method for going to recovery mode by (vol+) ?
because Mr Moscow Desire said in his upper post (post no 14 of this thread)
if yes how ?
if not ..... just thank u
there is only one recovery on your device..
you should slowly repost your exact trouble.. then do EXACTLY as someone tell you to fix it..
There is only one recovery on your device . If YOU FLASH CWM RECOVERY .. it overrides the acer recovery.
so if you dont have cwm revovery .
nevermind repost your system rom you are using .. rather or not you know what recovery you have .. Then someone can help you...
LOST BLONDE BABE I AM .. GIGGLES
gOOD LUCK..
Sorry you're having difficulty.
Please go here and download the is tool http://forum.xda-developers.com/showthread.php?t=1307539
Do EXACTLY what it says to do in the PDF
I once tried to use geno's partition resize, and after a reboot, it cannot boot into system anymore. Stuck at the huawei logo.
Since I'm quite familiar with linux, I tried this solution: http://forum.xda-developers.com/showthread.php?t=1971266
However, my linux installation didn't show any drives when it's in pink screen mode, so I'm pretty much stuck here.
In Windows 8 it did show two HUAWEI Technologies device (no drivers though) in pink screen mode.
I can't access recovery mode either, holding power + vol up only does normal boot for some strange reason. Anyone can help me out here?
ansarips said:
I once tried to use geno's partition resize, and after a reboot, it cannot boot into system anymore. Stuck at the huawei logo.
Since I'm quite familiar with linux, I tried this solution: http://forum.xda-developers.com/showthread.php?t=1971266
However, my linux installation didn't show any drives when it's in pink screen mode, so I'm pretty much stuck here.
In Windows 8 it did show two HUAWEI Technologies device (no drivers though) in pink screen mode.
I can't access recovery mode either, holding power + vol up only does normal boot for some strange reason. Anyone can help me out here?
Click to expand...
Click to collapse
try put official GB dload file on sd card, then put sd card in phone press power up+power down+power...
maybe it'll help you.
I tried that too, and it still bootloops. Not much luck.
Go to recovery and wipe everything. Then, reboot recovery, and then try partitioning again.
I can't get into recovery by pressing power + vol up. It just does normal boot (which bootloops).
If there would be any other way to get into recovery (such as via ADB or update.app) would be highly appreciated.
ansarips said:
I can't get into recovery by pressing power + vol up. It just does normal boot (which bootloops).
If there would be any other way to get into recovery (such as via ADB or update.app) would be highly appreciated.
Click to expand...
Click to collapse
Yes, you can boot into recovery via adb:
Code:
adb reboot recovery
But, you cannot use that until your phone is booted up.
If that doesn't work, you can follow these instructions to hard reset your phone:
http://www.hard-reset.com/huawei-u8800-ideos-x5-hard-reset.html
Good Luck.
I can't get it to do the hard reset either. It just boots normally, aside from the bootloop.
I believe I need to fix the partition first before I try to reinstall stock. I hear that stock doesn't work with custom partitions. Which is why I'd prefer to at least get some access to the device via USB in order to fix it.
Ah well. It's a failing device anyway. Even before the brick the camera doesn't work anymore, regardless of which ROM I choose. Maybe it's time to move on for me.
ansarips said:
I can't get it to do the hard reset either. It just boots normally, aside from the bootloop.
I believe I need to fix the partition first before I try to reinstall stock. I hear that stock doesn't work with custom partitions. Which is why I'd prefer to at least get some access to the device via USB in order to fix it.
Ah well. It's a failing device anyway. Even before the brick the camera doesn't work anymore, regardless of which ROM I choose. Maybe it's time to move on for me.
Click to expand...
Click to collapse
I have found someone who has solved this problem.
Go to this link. In the first post, the OP has shared the solution with us.
Try it, and Good Luck!
rqmok said:
I have found someone who has solved this problem.
Go to this link. In the first post, the OP has shared the solution with us.
Try it, and Good Luck!
Click to expand...
Click to collapse
Well, I tried this too (in fact I stated it in the first post) but pink screen mode isn't showing any device (I typed in "dmesg" in the Linux Terminal, none is found).
I appreciate your help, though. If I can solve the detection problem, I should be able to recover my phone using this method. I'd be happy to share some logs if it helps.
I got your back buddy
ansarips said:
Well, I tried this too (in fact I stated it in the first post) but pink screen mode isn't showing any device (I typed in "dmesg" in the Linux Terminal, none is found).
I appreciate your help, though. If I can solve the detection problem, I should be able to recover my phone using this method. I'd be happy to share some logs if it helps.
Click to expand...
Click to collapse
Hey, this is my first post well here it goes
Step 1 :- Format the sd card and put dload folder in it ( you'll get it from the official rom zip file)
Step 2 :- press and hold vol+ & vol- and then power button, it'll start upgrading
Step 3 :- now here is the tricky part!!! i was stuck here too and gone half mad well, let it reboot it will format cache etc and then bootloops, now turn off the device and then turn on pressing vol+ and power button, or u can try by pressing home, vol+ and power button, u'll b in recovery mode i.e in official rom builtin i guess.
Step 4 :- once in recovery, select reset factory default and clear partition cache, and then reboot!!!! Voila u will b able to finally boot successfully...
Now listen very carefully, u got only one chance here, cause if u reboot ur device again then bootloops will start again so in the first go, root the device by superoneclick and then install recovery i guess u knw all that and then u will be able to return to stock rom by flashing... once u've installed CWM then u r good to go bootloop wont effect ya SORRY FOR MY BAD ENGLISH THOUGH
So I bought Find 5 from someone and found out it was rooted with Pacman Rom/ TWRP after the fact. Earlier today, I thought I managed to flash the stock firmware back onto this phone using TWRP, but instead I had something new (in my experience, at least) happen to me. after I power it on and plug it into my PC with the OEM cable, it will ask me if I want it to be a media device or a USB storage device and I can see & modify the files/ folders. As for the phone itself, all it will display is the status bar (Battery, signal status) and I can pull it down to access the quick settings. Otherwise the screen is completely blank. When I pull down the quick settings bar try to hit the system settings icon (the "gear" wheel icon), the status bar disappears. and all I can get the phone to do is bring up the power on/ off menu when I hold the power button. I can get it into fastboot (power + volume up), but I can't get it to boot into recovery using the keys (power + volume down), or adb, or fastboot.
I'm honestly at my wits end with this phone right now. I think it's only soft bricked, but I have no clue how to get it to take the stock ROM (or any ROM for that matter) and nothing online seems to mention my problem and I can't even begin to guess what the f**k I managed to do.
Can anyone offer me any help or insight so that I can turn my brick back into a working Find 5?
So you can boot into fastboot mode? That's a start, everything should be fixable using fastboot.
Try flashing a new recovery, maybe the old one is corrupted.
fastboot flash recovery file.img
Then try to boot into recovery again.
theevilworm said:
So you can boot into fastboot mode? That's a start, everything should be fixable using fastboot.
Try flashing a new recovery, maybe the old one is corrupted.
fastboot flash recovery file.img
Then try to boot into recovery again.
Click to expand...
Click to collapse
I'll give it a shot :good:
Hi guys,
My Yotaphone 2 is currently stuck in a boot loop (shows android logo, then black screen, repeat) after a software update. I can get to the 'Downloading...' screen via power + vol. key and so have tried adb/fastboot as suggested in other similar threads. ADB can't see the device, which I guess is probably normal since it isn't booted up, but fastboot seemingly can. I've tried flashing the TWRP recovery which seems to go through fine on the PC end but doesn't seem to do anything at all on the phone itself. Calling a fastboot reboot gets the phone back to the boot loop and power + vol. goes back to the 'Downloading...' screen.
I've also tried using the Yotaphone flashing tool to flash a full android image - this also looked like everything was operating OK on the PC end but didn't seem to change anything on the phone once the process was complete.
Is there anything I'm missing or anything else I can try? Any help/ideas much appreciated!
Cheers.
pjrj said:
Hi guys,
My Yotaphone 2 is currently stuck in a boot loop (shows android logo, then black screen, repeat) after a software update. I can get to the 'Downloading...' screen via power + vol. key and so have tried adb/fastboot as suggested in other similar threads. ADB can't see the device, which I guess is probably normal since it isn't booted up, but fastboot seemingly can. I've tried flashing the TWRP recovery which seems to go through fine on the PC end but doesn't seem to do anything at all on the phone itself. Calling a fastboot reboot gets the phone back to the boot loop and power + vol. goes back to the 'Downloading...' screen.
I've also tried using the Yotaphone flashing tool to flash a full android image - this also looked like everything was operating OK on the PC end but didn't seem to change anything on the phone once the process was complete.
Is there anything I'm missing or anything else I can try? Any help/ideas much appreciated!
Cheers.
Click to expand...
Click to collapse
Do you have any idea what caused the bootloop? (maybe installing xposed or something?)
When you keep vol-up pressed at (not after) the moment the phone vibrates during power on, you will end up in TWRP recovery. There you can at least wipe->factory reset. Don't do this if you have stuff on your phone you'd like to keep though. (you can try to rescue/backup those by trying "adb pull <path_to_file>" when the phone is booted into TWRP)
SteadyQuad said:
Do you have any idea what caused the bootloop? (maybe installing xposed or something?)
When you keep vol-up pressed at (not after) the moment the phone vibrates during power on, you will end up in TWRP recovery. There you can at least wipe->factory reset. Don't do this if you have stuff on your phone you'd like to keep though. (you can try to rescue/backup those by trying "adb pull <path_to_file>" when the phone is booted into TWRP)
Click to expand...
Click to collapse
It was caused by doing an OS update (wasn't rooted or modified), I've only since tried installing the TWRP recovery and using fastboot to flash an official image to fix the looping. Flashing TWRP appears to work according to flashboot but holding the volume up key at the vibrate on power on doesn't do anything sadly.
pjrj said:
It was caused by doing an OS update (wasn't rooted or modified), I've only since tried installing the TWRP recovery and using fastboot to flash an official image to fix the looping. Flashing TWRP appears to work according to flashboot but holding the volume up key at the vibrate on power on doesn't do anything sadly.
Click to expand...
Click to collapse
Maybe I should rephrase: the vol-up should already be pressed once the vibrate starts. For a timing-insensitive, fool-proof (no pun intended) way you can enable bootloader (like you did before: you get the Downloading... screen). Then keep vol-up and power pressed together, after 15 seconds the device reboots hard, keep both keys pressed until you see TWRP 'curtain' screen, then release.
Did you try to use the YotaFlasher Windows application to reinstall an official ROM and restore factory defaults? You can get it from here, also download a ROM for your region here.