Guys, i need some help. i was messing with my nexus 7. then i tried to start fresh again by re-installing the stock 4.4.4. It's been a while since i flash Stock roms. So i find this tutorial, Erase boot, erase userdata etc. then when i tried to flash the bootloader, it always fail (unknown error). So im stuck with a OS-less Nexus 7 and no recovery. I can go to Fastboot. My device is recognizable through Fastboot devices. My old Rom was 4.4.4 stock. Please help me guys
Hello @vyrus027,
flash the files inside the factory image manually with these commands, it'll do the trick:
fastboot erase boot
fastboot erase recovery
fastboot erase system
fastboot flash boot boot.img
fastboot flash recovery recovery.img
fastboot flash system system.img
fastboot format userdata
fastboot reboot
Keelah se'lai,
GethPrime
Hello all,
I left a similar post in a couple other threads, and thought maybe someone here might have some insight into my problem.
Been running AICP rom (no custom kernel except the one that comes with AICP) with f2fs on /data and /cache for several months on 16GB grouper. About a month or so ago, the wife installed a game that wouldn't run on this hardware (King's Paradise Bay), and I uninstalled it. It left a file in /data/data/....etc that couldn't stat in TWRP, so no nandroid backups since then. I figured I'd just backup user data with TiBkp and wipe with fresh install of latest AICP when time permitted.
The other night I noticed the N7 was boot looping, getting to the stage where the boot animation dims. The boot anim would hang and after several seconds the Google unlock splash screen would come up and the N7 would try to boot again.
I can get into TWRP and bootloader with no problem. However, when TWRP comes up, the log shows the red entries for 2 files that can't stat, which has been this way since that game was uninstalled. I cannot seem to wipe *any* partition, and when I attempt to format or wipe userdata in TWRP, the N7 spontaneously reboots. Manually attempting to wipe/format/etc. via FastBoot doesn't work, with error message showing after trying to flash bootloader. Also, I can't change /data or /cache back to ext4. I am able to successfully read, write, and delete files on the N7 via computer USB MTP connection.
If the N7's flash memory has somehow become corrupted, is there a way to completely erase/format/whatever so that this wonderful device can become usable again? Any help would be greatly appreciated.
Thanks in advance.
Hello,
don't flash Bootloader via Fastboot. You should do this commands:
Code:
fastboot erase cache
fastboot erase userdata
fastboot erase system
fastboot erase boot
Trafalgar Square said:
Hello,
don't flash Bootloader via Fastboot. You should do this commands:
Code:
fastboot erase cache
fastboot erase userdata
fastboot erase system
fastboot erase boot
Click to expand...
Click to collapse
Yes, I have attempted all these commands, followed by flashing with either fastboot or TWRP with no success. Fastboot reports success, but partitions are not erased.
I have the same problem. The Nexus Root Toolkit can not flashign. It succeeds only boot TWRP. In TWRP computer sees the files from the tablet.I could not rename and delete. Wipe the TWRP and stock recovery displays the status OK, and the files are deleted. Fastboot shows that uploads, but all files remain unchanged.
Hi,
I have a Nexus 4 which was flashed with Lollipop 5.1.1.
My problem started when, after letting the battery completely drain and then trying to turn the phone on again, I got stuck on the message "Android is starting... optimizing apps" for days. I tried rebooting and factory format with no success.
I also tried formatting it through TWRP, but I got the message "Unable to mount /cache". After that, I tried flashing older factory images but only got my phone to work with the oldest version of jelly bean available by google developers page (4.2.2). After I got it to work, I tried to OTA update it to 4.3, but the same message "Android is starting ... optimizing apps" came back.
I had no other choice but to fastboot format it and flash it again with 4.2.2.
Any ideas on what could possibly be causing this? I thought it might be some problem in the cache partition but haven't found a way to fix it or if it's even possible to. Apparently everything's working with 4.2.2 but I'd love to go back to 5.1.1!
Thanks in advance!
dont dirty flash the factory image. make a clean factory image flash
After flashing stock KK or LP, are you also flashing userdata.img and then booting into stock recovery to format/wipe data before booting the ROM for the first time?
audit13 said:
After flashing stock KK or LP, are you also flashing userdata.img and then booting into stock recovery to format/wipe data before booting the ROM for the first time?
Click to expand...
Click to collapse
Haven't tried that, I'll give it a go and post the results here!
I've also noticed the phone isn't receiving any signal and it doesn't display the IMEI anymore..
The lack of an imei is a definite problem. Try flashing the stock LP or KK ROM and check for the imei.
audit13 said:
The lack of an imei is a definite problem. Try flashing the stock LP or KK ROM and check for the imei.
Click to expand...
Click to collapse
Did a clean factory image flash of Lollipop 5.1.1, booted into twrp recovery (I'm not sure how to go back to stock recovery) to wipe the data and got the following message:
E: UnMount: Unable to find partition for path '/sdcard'
E: Mount: Unable to find partition for path '/sdcard'
Updating partition details...
E: Unable to mount '/cache'
...done
E: Unable to mount '/cache'
Full SELinux support is present
E: Unable to mount '/cache'
E: Unable to mount '/cache'
MTP Enabled
Formatting Data using make_ext4fs function.
Ypu may need to reboot recovery to be able to use /data again.
Updating partition details...
E: Unable to mount '/cache'
...done
After that I rebooted the phone and it's been stuck on bootloop again since then.
When you flash a stock ROM, did you flash the recovery.img? Sometimes, I find that only stock recovery can properly format the cache. When flashing my Nexus 5 to stock from a custom ROM, I get an error message when I boot into stock recovery that the cache has an invalid format. Once I perform a factory wipe, the cache is properly formatted and wiped.
audit13 said:
When you flash a stock ROM, did you flash the recovery.img? Sometimes, I find that only stock recovery can properly format the cache. When flashing my Nexus 5 to stock from a custom ROM, I get an error message when I boot into stock recovery that the cache has an invalid format. Once I perform a factory wipe, the cache is properly formatted and wiped.
Click to expand...
Click to collapse
Yeah, I flashed the images for boot, recovery, system, userdata and cache separately. I'll look up how to get back into stock recovery now and I'll try what you've said!
If recovery.img was flashed, the phone should not have TWRP, it should be a stock recovery. If stock recovery cannot be flashed, this leads to me believe that something is wrong with the memory chip.
audit13 said:
If recovery.img was flashed, the phone should not have TWRP, it should be a stock recovery. If stock recovery cannot be flashed, this leads to me believe that something is wrong with the memory chip.
Click to expand...
Click to collapse
I tried it again, flashed everything including recovery, went into stock recovery mode and wiped the data. Apparently its back to being stuck on bootloop
Use fastbot commands to erase cache and userdata. Then use fastboot to flash the userdata.img file, boot directly to recovery, and wipe again.
audit13 said:
Use fastbot commands to erase cache and userdata. Then use fastboot to flash the userdata.img file, boot directly to recovery, and wipe again.
Click to expand...
Click to collapse
Did it, still stuck on bootloop... Not sure if it can be somehow related but I got this message when I booted into recovery
The recovery screen looks correct because, after flashing userdata.img, you must format in stock recovery.
I am at a loss as to why 4.2.2 works while kk and LP do not.
audit13 said:
The recovery screen looks correct because, after flashing userdata.img, you must format in stock recovery.
I am at a loss as to why 4.2.2 works while kk and LP do not.
Click to expand...
Click to collapse
Ah, thanks for the help, anyway!
If someone else knows what to do.. The phone is now back to the initial message "android is starting... optimizing apps". Kinda of losing hope now
I've done this to my Nexus 5 once, too.
You basically screwed your cache partition.
Boot into the bootloader. Hook the phone up to your pc and open the command prompt.
Enter these commands:
fastboot erase cache
fastboot format cache
fastboot reboot-bootloader
When successful boot into recovery and the errors should be gone.
You should be able to flash a new rom now.
playitlouder said:
I've done this to my Nexus 5 once, too.
You basically screwed your cache partition.
Boot into the bootloader. Hook the phone up to your pc and open the command prompt.
Enter these commands:
fastboot erase cache
fastboot format cache
fastboot reboot-bootloader
When successful boot into recovery and the errors should be gone.
You should be able to flash a new rom now.
Click to expand...
Click to collapse
This got rid of the unable to mount cache error, flashed the rom again but it's still stuck on bootloop :/
thafuchs said:
This got rid of the unable to mount cache error, flashed the rom again but it's still stuck on bootloop :/
Click to expand...
Click to collapse
Okay. Progress
You have probably already nuked all your data. So I would suggest erasing and formatting everything again and then flash the newest factory image.
Enter bootloader again, on your pc do the following:
fastboot erase system
fastboot format system
fastboot erase data
fastboot format data
fastboot reboot-bootloader
Then grab the factory image, open the flash_all.bat file in an text editor (either use windows notepad, or grab notepad++).
You have to "cd" to the directory of your factory image. I would suggest to type "c:" *press enter* then cd *pull the folder that contains the factory image into the command prompt* *press enter*.
If you type "dir" now you should get your factory image directory.
Now just type in every command from the flash_all.bat one by one. Report, if there are any errors.
playitlouder said:
Okay. Progress
You have probably already nuked all your data. So I would suggest erasing and formatting everything again and then flash the newest factory image.
Enter bootloader again, on your pc do the following:
fastboot erase system
fastboot format system
fastboot erase data
fastboot format data
fastboot reboot-bootloader
Then grab the factory image, open the flash_all.bat file in an text editor (either use windows notepad, or grab notepad++).
You have to "cd" to the directory of your factory image. I would suggest to type "c:" *press enter* then cd *pull the folder that contains the factory image into the command prompt* *press enter*.
If you type "dir" now you should get your factory image directory.
Now just type in every command from the flash_all.bat one by one. Report, if there are any errors.
Click to expand...
Click to collapse
Okay, got some errors on the way... trying to erase data failed (Remote: partition table doesnt exist), format data failed too (formatting is not supported for filesystem with type ' '.)
Also, on the last command:
.\fastboot -w update .\image-occam-lmy48t.zip
archive does not contain 'boot.sig'
archive does not contain 'recovery.sig'
archive does not contain 'system.sig'
archive does not contain 'vendor.img'
[...]
checking version-bootloader
FAILED
Device version-bootloader is 'MAKOZ10o'
Update requires 'MAKOZ30f'
Rebooted and its now stuck on google logo
Sorry, you should have typed: (it obviously cannot format something that is not there )
fastboot erase userdata
fastboot format userdata
Have you flashed the bootloader?
Have you rebooted after flashing the bootloader?
fastboot flash bootloader bootloader-mako-makoz30f.img
fastboot reboot-bootloader
Don't forget to also flash the radio.
These "does not contain" errors are normal.
playitlouder said:
Sorry, you should have typed: (it obviously cannot format something that is not there )
fastboot erase userdata
fastboot format userdata
Have you flashed the bootloader?
Have you rebooted after flashing the bootloader?
fastboot flash bootloader bootloader-mako-makoz30f.img
fastboot reboot-bootloader
Don't forget to also flash the radio.
These "does not contain" errors are normal.
Click to expand...
Click to collapse
Okay, I've flashed bootloader, rebooted, flashed radio, rebooted, typed the update command but the checking of bootloader version failed again.. rebooted and its back to being stuck on google logo
Hi everybody...I'm in trouble with my Yotaphone YD201.
I done format data with TWRP.
Then, I run these commands with Win10 for clean flash of RU144:
Code:
fastboot flash boot {Directory_firmware/boot.img}
fastboot flash -S 512M system {Directory_firmware/system.img}
fastboot flash recovery {Directory_firmware/recovery.img}
fastboot flash cache {Directory_firmware/cache.img}
fastboot flash modem {Directory_firmware/radio/NON-HLOS.bin}
fastboot flash sbl1 {Directory_firmware/radio/sbl1.mbn}
fastboot flash rpm {Directory_firmware/radio/rpm.mbn}
fastboot flash tz {Directory_firmware/radio/tz.mbn}
fastboot flash userdata {Directory_firmware/userdata.img}
fastboot flash aboot {Directory_file__emmc_appsboot.mbn}
fastboot reboot
After the last one, Screen gone black and nothing appends...
Now, adb and fastboot can't contact with Yota ("adb devices" give "<waiting for devices") .
Now, In Win devices, I can find " QHSUSB_BULK".
After some search, I found out that my phone is in a recovery mode of Qualcomm. Does anybody know how to unblock it? Problably I need of specific driver to contact with this phone. Thanks so much!
P.S.: do not esitate to contact me if my english is not clear =)
How about a method like this https://forums.oneplus.net/threads/solution-bricked-oneplus-one-recovery.306306/ but use Yotaphone files instead?
evilracer123 said:
How about a method like this (...) but use Yotaphone files instead?
Click to expand...
Click to collapse
This discussion uses Msm8974DownloadTool.exe from the directory of ColorOS but the wire connection does not work (the file is no longer available, from Mega).
Also, not sure if I can use Msm8974DownloadTool.exe with Yotaphone. Alternatively, what can I use?
Hey, I need to flash a persist.img file, because my phon restarts every 2 Minutes and does not find any WiFi, but it gives me out the error: remote:Error : persist partition not allowed download. Is there a way to flash it without twrp, since when I try to flash a custom recovery, it says partition table not found. Is there a way to flash persist.img in Mi Flash Tool?
use the link given below
it will help you
https://forum.xda-developers.com/showpost.php?p=75782887&postcount=2
raaz1431994 said:
use the link given below
it will help you
https://forum.xda-developers.com/showpost.php?p=75782887&postcount=2
Click to expand...
Click to collapse
Don't have Twrp, can't flash custom recovery, it says partition table does not exist
boot to fastboot and
give the command
fastboot boot twrp.img
instead of fastboot flash recovery twrp.img