For about 8 months I've been using an XT1521, flashing multiple ROMs as I searched for the elusive "one true ROM". First I flashed Kit Kat ROMS, then Marshmallow ROMs more recently. My interest in Marshmallow was the storage expansion via the external SD card.
About 2 weeks ago I had been running a 5.1.1 Mokee ROM successfully, then decided to again try a 6.0.x ROM. I flashed the 6.0.x ROM without any warnings or errors occurring and rebooted. On reboot I saw the ROM's initial boot animation, then was prompted to enter my Android password. I did so and got a message titled "Decryption Unsuccessful" which stated that although I had entered the correct password, my data could not be decrypted and only a factory reset would restore the phone to a usable state. After being baffled by the message, I went ahead and allowed the factory reset and again rebooted. This time I got the same result. . . "Decryption Unsuccessful".
What baffled me is that at no time in the history of the phone had I enabled data encryption.
Since then I have tried the following to fix this but been unsuccessful:
Flashed a 5.1.1 ROM
Flashed a 6.0.x ROM
Used access to the phone via 'ADB' to reformat the data partition via Linux
After much research I finally thought flashing the original ROM would help. I found via the XDA forums the necessary files for the XT1521. I read that I needed to connect the phone and use Fastboot to flash the various files. While I've been able to connect the phone and access it via 'ADB' commands, it's simply not visible to the "Fastboot' tool. I have installed the Google USB drivers (on Windows 7) but the command "fastboot devices" results in Fastboot reporting "Waiting for device" which simply never ends. Is there a Motorola-specific Windows driver to be installed to allow Fastboot to see the phone? I have tried the same on Linux with the same result, so it seems it's not an OS issue.
Can anyone think of how I can recover from the "Decryption Unsuccessful" command? If not, are there extra steps I need to complete to get Fastboot to be able to "see" the phone?
Related
Hello,
I am having a big issue with my Sony Xperia Z2 Tablet. I tried to install a new rom on it and I am stuck in the recovery step.
I achieved to unlock the phone, install the fastboot drivers and flash the boot of my device. I can access to the CWM-based Recovery v6.0.5.1 menu but I just can't put the new rom in my /sdcard/xx directory.
I've tried to use the "adb push cm-11-....-windy.zip /sdcard/0/" command line, but I receive the message: "error: device not found".
I then check the command "adb devices" and indeed the device is not listed even though the device is connected. I then tried to reboot the device (after wiping the data/factory reset, cache partition and dalvyk cache, but my tab is not rebooting on anything. I have nothing but the wave background. Once the device got at that stage, the "adb devices" commande shows the following message: CB51xxxxxx unauthorized. It looks like I have a driver problem or something similar, but I tried to install different drivers and nothing worked so far.
So from there, I am lost, I can't boot my system with the original rom and I can't transfer any new rom in the memory to install a new one.
I would appreciate it a lot if anyone could give me some leads on how I could transfer the new rom on my device or at least recover the original sony firmware so that I can use my tablet again.
Thank you for your answers and time
P.S. I also tried the slideloader option, but since it seems to work on the adb program, it's not working either.
Solved
¨Djyinks said:
Hello,
I am having a big issue with my Sony Xperia Z2 Tablet. I tried to install a new rom on it and I am stuck in the recovery step.
I achieved to unlock the phone, install the fastboot drivers and flash the boot of my device. I can access to the CWM-based Recovery v6.0.5.1 menu but I just can't put the new rom in my /sdcard/xx directory.
I've tried to use the "adb push cm-11-....-windy.zip /sdcard/0/" command line, but I receive the message: "error: device not found".
I then check the command "adb devices" and indeed the device is not listed even though the device is connected. I then tried to reboot the device (after wiping the data/factory reset, cache partition and dalvyk cache, but my tab is not rebooting on anything. I have nothing but the wave background. Once the device got at that stage, the "adb devices" commande shows the following message: CB51xxxxxx unauthorized. It looks like I have a driver problem or something similar, but I tried to install different drivers and nothing worked so far.
So from there, I am lost, I can't boot my system with the original rom and I can't transfer any new rom in the memory to install a new one.
I would appreciate it a lot if anyone could give me some leads on how I could transfer the new rom on my device or at least recover the original sony firmware so that I can use my tablet again.
Thank you for your answers and time
P.S. I also tried the slideloader option, but since it seems to work on the adb program, it's not working either.
Click to expand...
Click to collapse
I found a solution, I flashed my tablet with flashtool and a working ftf file. Then I could have my tablet running the original sony rom and finally I could transfer the cyanogen rom into the tab. Everything is running fine now.
Device: Nexus 9 (Wi-Fi), Bootloader Unlocked
Computer: Windows 10 (Bootcamp on a Retina MacBook Pro)
After and unsuccessful attempt to install CM 12.1 on my Nexus 9 (Wi-Fi) using TWRP, I tried using this method to return to stock:
http://forum.xda-developers.com/nexus-9/general/guide-nexus-9-to-stock-guide-unbrick-t2975668/
I thought it had worked perfectly, but the tablet still would not boot. I went back and looked at the command prompt log and realized I had made a grave error: I had flashed everything except for the system image. I re-entered fastboot in an attempt to fix it by flashing the system, but now the tablet will not connect to my computer at all. I have tried to remove and reinstall the ADB drivers, but it doesn't show up at all in Device Manager. I tried booting into recovery via fastboot, but got an image of the android mascot knocked-out with an exclamation point, presumably since I over-wrote it with the method above.
Any ideas on how to restore the fastboot/adb connection with my computer? If I can accomplish that I can presumably just flash the system image and that would restore the stock ROM.
Any insight at all would be much appreciated.
dgindra said:
Device: Nexus 9 (Wi-Fi), Bootloader Unlocked
Computer: Windows 10 (Bootcamp on a Retina MacBook Pro)
After and unsuccessful attempt to install CM 12.1 on my Nexus 9 (Wi-Fi) using TWRP, I tried using this method to return to stock:
http://forum.xda-developers.com/nexus-9/general/guide-nexus-9-to-stock-guide-unbrick-t2975668/
I thought it had worked perfectly, but the tablet still would not boot. I went back and looked at the command prompt log and realized I had made a grave error: I had flashed everything except for the system image. I re-entered fastboot in an attempt to fix it by flashing the system, but now the tablet will not connect to my computer at all. I have tried to remove and reinstall the ADB drivers, but it doesn't show up at all in Device Manager. I tried booting into recovery via fastboot, but got an image of the android mascot knocked-out with an exclamation point, presumably since I over-wrote it with the method above.
Any ideas on how to restore the fastboot/adb connection with my computer? If I can accomplish that I can presumably just flash the system image and that would restore the stock ROM.
Any insight at all would be much appreciated.
Click to expand...
Click to collapse
Hello,
I have reported this thread to be moved to right Q&A section in order to get expertise help.
-Vatsal
Have you ever tried to connect your tablet to another computer?
Turns out I forgot to actually press the button in fastboot that enables the USB connection (I feel even more stupid now). Was able to return to stock, albeit with the "This device is corrupt" message during boot.
dgindra said:
Turns out I forgot to actually press the button in fastboot that enables the USB connection (I feel even more stupid now). Was able to return to stock, albeit with the "This device is corrupt" message during boot.
Click to expand...
Click to collapse
I got the same message yesterday after I returned to stock kernel from a custom one. What I did to get rid of that warning message was to flash all img file(boot, cache, recovery, system, vendor) in MMB29K factory image. (Bootloader is optional) [After that I also performed a factory reset but this step might be unnecessary, do it if the message still exist after flashing stock images] If you don't like that warning you can try these procedures.
Hey all, hope everyone is having a great day (I'm not),
I own a SM-T510 Samsung Galaxy Tab A 10.1 WiFi.
It all started when I tried to flash Nexus and it worked partially, but I didn't gain access to my internal storage for some reason, so I reverted back to stock rom.
Then for some reason part of the nexus rom was still there, but I was afraid of damaging my device further.
For some reason, netflix wasn't working, so I tried to apply a software update to my device using Smart Switch.
The update didn't work and I was caught in a Nexus bootloop. I entered download mode and I tried flashing twrp using odin. I thought it worked until I realised that it wouldn't get past the teamwin screen.
I re-entered download mode and there it gave me an option to factory reset the device while locking the bootloader. This is where I screwed up as I thought what else could possibly happen to my device?
SO I locked my bootloader and whatever I did I couldn't get out of download mode. AND here I screwed up even more. I tried to flash the stock ROM again using odin as a last resort but it just wouldn't complete after 10 minutes, so I closed Odin and restarted my device and here I am, stuck in a screen that says, "An error has occurred while updating the device software. Use the Emergency recovery function in the Smart Switch PC software." Now obviously this wouldn't work because my device isn't even listed there. But to note, my device is recognised by Odin and my PC.
Note: I am an absolute noobie at rooting so be easy on me.
Note 2: adb and fastboot doesn't work for me for some reason, my powershell says, "The term 'fastboot' is not recognized as the name of a cmdlet, function, script file, or operable program.
Check the spelling of the name, or if a path was included, verify that the path is correct and try again."
Thank you all for any help. I am at my wit's end.
Hi People,
I hope I am putting this question in the proper location.
I have had several attempts ate flashing a new ROM to my device as it was the Chinese version & kinda useless to me not having Play store or several other APPs I want. I also wanted to try ROOT a phone for the first time.
I managed to get as far as getting ADB & fastboot working & TWRP installed on the device. The first ROM I had put in my file storage was corrupt so I tried the Lineage 17 version which "seemed"to install with a success message, but the phone would only boot into TWRP. so I tried the Havoc ROM from the thread in this site area. Same thing, would only boot into TWRP. Then I thought I would start over & install the factory ROM from: https://xiaomifirmwareupdater.com/miui/olivelite/stable/V12.0.2.0.QCPMIXM/ with ADB & fastboot. I got a success message from the MiFlash tool but the device is now saying the "MIUI verson cannot be installed on this device" in one screen from the Redmi-Recovery 3.0 menu that's now on it.
From here I can Reboot, wipe data or connect with MiAssistant. When I try MiAssistant (PC Suite) the phone does not connect to my PC but I can see the ADB device from device manager and ./adb fastboot devices shows a serial number -but connected as sideload if that makes a difference?
I hope I explained well enough to be understood. Is there anything I can do from here to get it working or is it fully stuffed?
Ur device's bootloader still unlocked?
T0B3R said:
Hi People,
I hope I am putting this question in the proper location.
I have had several attempts ate flashing a new ROM to my device as it was the Chinese version & kinda useless to me not having Play store or several other APPs I want. I also wanted to try ROOT a phone for the first time.
I managed to get as far as getting ADB & fastboot working & TWRP installed on the device. The first ROM I had put in my file storage was corrupt so I tried the Lineage 17 version which "seemed"to install with a success message, but the phone would only boot into TWRP. so I tried the Havoc ROM from the thread in this site area. Same thing, would only boot into TWRP. Then I thought I would start over & install the factory ROM from: https://xiaomifirmwareupdater.com/miui/olivelite/stable/V12.0.2.0.QCPMIXM/ with ADB & fastboot. I got a success message from the MiFlash tool but the device is now saying the "MIUI verson cannot be installed on this device" in one screen from the Redmi-Recovery 3.0 menu that's now on it.
From here I can Reboot, wipe data or connect with MiAssistant. When I try MiAssistant (PC Suite) the phone does not connect to my PC but I can see the ADB device from device manager and ./adb fastboot devices shows a serial number -but connected as sideload if that makes a difference?
I hope I explained well enough to be understood. Is there anything I can do from here to get it working or is it fully stuffed?
Click to expand...
Click to collapse
You should flash China factory rom, if you can.
Xiaomi Firmware Updater
The ultimate script that provides firmware packages for Xiaomi devices.
xiaomifirmwareupdater.com
Hi all,
Well, operator error is definitely at fault here... I made a series of mistakes that got me to where I am now. All I intended on doing was repairing my dad's tablet which was running atrociously slowly. I tried to follow some steps, but improvised as I was getting errors and obviously ended up making things a lot worse...
Now tuning on the tablet will directly go to a command line interface with a long series of errors and these are the last 2 lines:
Rich (BB code):
blkD :HardDisk - Alias (null)
PciRoot (0x0) /Pci (0x17,0x0) Ctrl (0x0) /HD(14,GPT,80868086-8086-8086-8086-000000000008,0x646828,0x16D47D8)
blkE :BlockDevice - Alias (null)
PciRoot (0x0) /Pci (0x17,0x0) Ctrl (0x0)
Press ESC in 1 seconds to skip startup.nsh, any other key to continue.
Shell> _
In this state it cannot be interacted with and won't be detected by my PC over USB.
This happens for normal, recovery and bootloader modes. The only mode that I can access is DNX mode but attempting to boot droidboot will result in the same command line UI described above, including when trying to restore the BIOS using the PC executable (which I assume needs to enter fastboot mode, which it can't do...).
What can I do now? Any way to get anything working in the above screen or through DNX?
I'm thinking that a partition was corrupt in addition to me wiping the ESP is causing this. Maybe it's possible to completely format and setup all the partitions and start from scratch again? How can I flash esp.img when all I have access to on the tablet is DNX mode?
Detailed history below...:
HISTORY
1)
The tablet is a Lenovo Yoga Tab 2 1050F. It was running very slowly to the point where my dad just didn't bother to use it. I thought it would be wise to factory reset it as a first step. There is no option to do so within the Lenovo skin of Android so I started by going into recovery mode and performed a factory reset from there.
After it rebooted, the Android UI would loop back to the language selection after connecting to a WiFi network and I would get "Unfortunately Google Play Services has stopped." error message. It would just loop through the Language Selection > Connect to WiFi network pages over and over.
2)
Having installed CM on my old S3 back in the day, I thought I could go about the same process and flash a gapps ZIP file in recovery mode. That didn't work, I got an error because the zip was unsigned.
I thought I could install TWRP to flash unsigned zips, reinstall Gapps and get the tablet passed the Android UI loop.
3)
I followed this guide on XDA to install an unofficial TWRP (which involved unlocking the bootloader). It didn't work because I couldn't flash over ADB (because the tablet couldn't allow Developer Mode since it was stuck in the Android UI loop). So I flashed as many files as I could in fastboot.
I eventually flashed the TWRP recovery.img but that didn't work : when turning on to Recovery mode it would just go back to the bootloader screen.
4)
I thought I must have screwed up something up so I tried to restore the BIOS using an executable I found but I realized the tablet was already upgraded to Lollipop and the only BIOS restoration exe was for Kitkat. Sure enough it got even worse and I could no longer boot Android.
5)
I still had bootloader and fastboot though so I followed a guide to restore the tablet to the original OS (which ironically I already downloaded before trying to get TWRP but forgot about and didn't unpack). I set up Intel Platform Tools but the flash process didn't work because it went to droidboot and then lost USB connection. On the Intel program it would just stay stuck at 20% Wiping ESP. It would time out twice and then give me a final error message.
6)
So I thought to explore the flash.xml file provided to see if I could do the steps manually. I knew it was stuck at wipe ESP because in droidboot it couldn't get commands from PC. So I went into fastboot and wiped ESP manually myself! Little did I know how foolish this was to do because I was simply unable to flash the provided ESP.img again. Following this I lost access to the bootloader.
7)
I found a guide to restore a bricked 1050F here on XDA but it needs droidboot which now goes to the command line UI described at the top of this post. When attempting to restore the kitkat BIOS again, droidboot is also needed which results in the same cmd UI.
8)
Which leads me to where I am now which is that the tablet doesn't boot to: normal, recovery, bootloader/fastboot or droidboot. Which is why I am now asking for help. What can I do?
I'm thinking that a partition was corrupt in addition to me wiping the ESP is causing this. Maybe it's possible to completely format and setup all the partitions and start from scratch again? How can I flash esp when all I can get access to is DNX mode?
Thanks for reading this far and if you have any more ideas, please let me know, thanks in advance.
Hi, would anyone like to weigh in on this issue?