[Q] Accidentally deleted nexus 9 OS! TWRP installed - Nexus 9 Q&A, Help & Troubleshooting

Hi all,
I had a rooted Nexus 9 running 5.0.2 and I attempted to update to 5.1.1 using the Nexus Toolkit by Wugfresh.
When I tried to update the following message appeared in the CMD window: "Error: update package missing system.img"
I had previously encrypted my Nexus 9 also, and decided to attempt a factory reset which I did from the Backup & Reset menu. I then attempted to update via the Nexus toolkit again but had the same issue. I booted into TWRP and did a factory reset from there, however when the tablet booted back up I got stuck on the "Checking Connection" screen after I had selected a WiFi network. It was stuck checking the connection for over an hour. I booted into TWRP again however this time I erroneously wiped the system together with all the other partitions and have now wiped the OS.
I still have the same problem when trying to install even an older version of android 5.0.1 as an example - with the same missing system.img message coming up.
I've now installed the Android SDK and am stuck attempting a manual installation.
I would appreciate some help installing android back on my tablet! Please help if you can!
I'm not a complete noob, but I do get somewhat baffled by the command line instructions and so a step by step would really help. I've googled around plenty but no one else seems to have had this problem with the Nexus 9.
Thanks in advance!

Teejster has made a step by step on flashing the latest factory image:
http://forum.xda-developers.com/showthread.php?p=60697487
Sent from my Nexus 9

Why don't you just go back to Wug's, select Flash Stock/Unroot with "Bootlooped/Soft Bricked" checked and reinstall 5.1.1?
If it says "Fastboot not detected" or something just boot into the bootloader by holding down volume down and power and then select fastboot.
That should work.

ChristianJay said:
Why don't you just go back to Wug's, select Flash Stock/Unroot with "Bootlooped/Soft Bricked" checked and reinstall 5.1.1?
If it says "Fastboot not detected" or something just boot into the bootloader by holding down volume down and power and then select fastboot.
That should work.
Click to expand...
Click to collapse
Did this with my Nexus 7 a while back and it worked like a charm :good:

Related

[Q] Not Sure How to Fix Nexus 5

Yesterday I was trying to update my Nexus 5 from 4.4.2 to 4.4.3. It rebooted me into CWM recovery and asked me to install the .zip to update. It finished successfully, but then it asked me something upon rebooting about fixing root that I had not seen before. I clicked "Go Back" but when I did it shut down and now it will not boot android (all I can see if the coloured circles forever) and when I try to enter recovery mode all I can see is an android symbol with its chest open and a red error triangle. So I have no access to android or CWM, and only to fastboot mode. Is my phone bricked or is there a fix?
mrxip1 said:
Yesterday I was trying to update my Nexus 5 from 4.4.2 to 4.4.3. It rebooted me into CWM recovery and asked me to install the .zip to update. It finished successfully, but then it asked me something upon rebooting about fixing root that I had not seen before. I clicked "Go Back" but when I did it shut down and now it will not boot android (all I can see if the coloured circles forever) and when I try to enter recovery mode all I can see is an android symbol with its chest open and a red error triangle. So I have no access to android or CWM, and only to fastboot mode. Is my phone bricked or is there a fix?
Click to expand...
Click to collapse
Don't worry your device is not fully bricked, just soft-bricked. You have two options, since you have access, to fastboot you can reflash a custom recovery and then sideload a custom ROM and flash that in the custom recovery. Or your other option is to use fastboot to flash the stock factory image for Android 4.4.3 for the Nexus 5 which can be found here. Let me know if you still have questions I'll be happy to help you out.

[Q] Help Lenovo Yoga 8 B6000-F in boot loop

I have a a Lenovo Yoga 8 B6000. Im running 4.4.2 and after some fiddling, used Vroot to root, and subsequently went through some arduous steps to finally remove the Vroot and replace with SuperSu. Life was good. Then I got a little careless when removing some of the bloatware and ended up with a constant boot-loop problem. And of course, no backup. (whoops!)
I have been researching this the past 2 days for a workable solution and am reaching out for some more refined assistance.
Here is what I have done thus far:
When pressing Power + VOL+/- I get to the initial recovery menu which gave me: Recovery, Fastboot, and Normal. After selecting the "Recovery" mode, I get the "No Command", after which I pressed the power button one more time and got into the English recovery menu. I show
Android System Recovery <3e>
B6000_A442_001_026_141117_WW_WIFI
Reboot System Now
Apply Update from ADB
Apply Update from SDCard
Apply update from Cache
Wipe data/Factory Reset
Wipe Cache Partition
I attempted to wipe the cache, followed by Wipe data/Factory reset. Following this procedure, I remained in the boot loop.
I installed ADB Flashtool drivers for WIN7 and attempted to use flash tool which was also suggested on this site. I got a 4.2.2 ROM "B6000_A422_000_059_131219_WW_WIFI" from a russian lenovo forum site to use with the flash tool and because the tablet continues in boot loop when starting, there was no loading of the ROM from that method.
I put the rom on an SD card and went into recovery mode. The ROM was not visible by the recovery menu (By that I guess the Apply Update from SDCard is looking for a specific file extension, which is not present).
I may have tried a few other things which are not popping into my head at the moment.
Im kind of at a loss and looking for any ideas from the gurus out there on how I might be able to get any kind of ROM to flash onto my B6000 and getting it up and running again.
Thanks
I was able to successfully fix the Yoga 8 tablet by using the instructions here:
//aluk4rd.wordpress.com/2014/09/08/an-easy-guide-for-restoring-your-stock-4-2-2-firmware-on-your-lenovo-yoga-tablets-8-and-10-b6000-and-b8000/
The trickiest part was getting the Mediatek driver installed. I use a dual booting MAC with WIN7 and sometimes there are some kwirks when operating in WIN7. However, the results of the instructions brought my tablet back to life, as well as downgrading to 4.2.2
Hi engineer2loggie,
How did you get that firmware? Can you tell where can I download it?
Thanks.
has anybody found a solution to this? im stuck with the same problem atm

Soft bricked phone?? No access to recovery mode but I have access to fastboot

Hi all,
I have a Xiaomi Redmi 3 and I tried updating it to Android 6.0 today using a very helpful article from cyanogenmods
It was all going so well until the end when I came to flash the ROM, I downloaded the wrong one!! (I needed the ARM64).
Anyway my phone restarted and now I can't seem to rectify my mistake!
I can't access the recovery mode (Power button and volume up) It just shows me the Xiaomi sign and stays there but I can access Fastboot (Power and volume down) and it can communicate with the PC via CMD.
I'm super new to this and I've been looking online for the past 5 hours with no luck so maybe someone can help me out.
I tried fastboot update open_gapps-arm64-6.0-aroma-20160814.zip
But I got...
archive does not contain 'android-info.txt'
archive does not contain 'android-product.txt'
error: update package has no android-info.txt or android-product.txt
Any suggestions? I've found a few other threads but they're way too techy for me and I couldn't understand what to do!
Thanks in advance
I've realised that my initial post was pretty vague and I don't think I used the correct terminology so I'll explain in the hope that someone may be able to help.
So I wanted to update from 5.1.1 to 6.0.
I found an article from Cyanogenmods and I downloaded the Redmi 3 TWRP recovery, the ROM for Redmi 3 Cyanogenmods 13 and the GApps.
I installed the TWRP recovery,
Copied the GApps and CyanogenMod ROM ZIP to my device
Booted into recovery mode and backed up my data using TWRP,
Wiped data factory reset, Cache partition, Dalvik Cache and Formatted the System partition,
I flashed the custom ROM and it all worked well,
I then went to flash the GApps and thats when it said that I had installed the wrong version (I needed the ARM64 not the 32).
It then restarted and I've been stuck in a bootloop.
I can access fastboot.
I can't get into recovery, the phone just goes to the Xiaomi sign then gets stuck on the Cyanogenmod logo.
A few times it looked like it was doing an update but it was all in Chinese so I couldn't understand it then it briefly went to what looked like a set up screen but then rebooted and got stuck on the logo screen again.
Any help would be great;y appreciated.
I only bought this phone a few days ago, my stupid mistake for wanting to upgrade!!
Ramah.h said:
Hi all,
I have a Xiaomi Redmi 3 and I tried updating it to Android 6.0 today using a very helpful article from cyanogenmods
It was all going so well until the end when I came to flash the ROM, I downloaded the wrong one!! (I needed the ARM64).
Anyway my phone restarted and now I can't seem to rectify my mistake!
I can't access the recovery mode (Power button and volume up) It just shows me the Xiaomi sign and stays there but I can access Fastboot (Power and volume down) and it can communicate with the PC via CMD.
I'm super new to this and I've been looking online for the past 5 hours with no luck so maybe someone can help me out.
I tried fastboot update open_gapps-arm64-6.0-aroma-20160814.zip
But I got...
archive does not contain 'android-info.txt'
archive does not contain 'android-product.txt'
error: update package has no android-info.txt or android-product.txt
Any suggestions? I've found a few other threads but they're way too techy for me and I couldn't understand what to do!
Thanks in advance
Click to expand...
Click to collapse
if i was in your situation i'd probably go fastbootmode > EDL > then flash official dev rom from miui site(ido). from there'd id redo everything unlocking bootloader,flashing twrp,etc.
check out this post:
http://forum.xda-developers.com/redmi-3/development/redmi-3-pro-spacex-rom-t3406919
it has a "How to Unbrick Redmi 3 ? " on the first page.
helped me alot, hope it unbricks ur phone too! cheers!
have you unlocked your bootloader?, its very risky to change to custom rom when your bootloader is locked, if its already unlocked, all you have to do is go to en.miui.com and download official rom for redmi 3 and flash it using Miflash
Edl mode is the best bet to get back to stock. Vol up and down while plugging in if i recall, from an off state. I couldn't get it from fastboot.
Lets try this for reach to TWRP.
First press volume up and down button after press power button and wait.
Phone is going to restart and you see mi icon very short time and screen is going black, immediately release all buttons and wait. You have to reach recovery with this combination.
Open a terminal/command prompt and navigate to where you have the TWRP file. Put phone in fastboot mode and enter this command: "fastboot boot (name_of_TWRP.img)".
Then when you're in recovery, just flash the new Gapps.

XT1225 Boot Looping issues, Lost IMEI and No TWRP Recovery

Hello Everyone,
I own a Motorola quark XT1225 64GB indian version. I had earlier rooted it and installed Lineage OS 14.1 (Unofficial) in it. The installation was without any issues and worked for few months then one day i pressed the power button to turn on the phone and it went into a boot loop and nothing would work. i gave it to a repair shop and he installed android 6.0.1 in it and gave me back. But my phone wont connect to WIFI and later i found out that there was no IMEI or any network related information left in it. only the OS booted and nothing else was working. Even the Developer options were not available as for some reason tapping the build number was not giving any result. he refused to fix it. I tried a factory reset from the settings menu with no result. even the recovery was not available any more in the phone. I tried installing new android stock images both for android 5 and 6 first from RSD lite and fast boot mode which kept failing and then i tried it using the command promt. After installation was complete the phone rebooted and android appeared with erasing written under it but then it went into boot loop and would keep restarting every time android appeared. I tried installing TWRP recovery from the command promt the initial image of the recovery appears but then next second it says unable to mount data and keeps rebooting again and again. Kindly suggest ways to fix my OS as well as have my IMEI restored.
Really need help.
Thanks a lot.

Guide to return back to Indian Stock (C675) on V10 from any Custom ROM

Many of us are on custom OS and want to return back to stock Indian OS which was not possible till now. Below posted is a tried and tested method by me as well as my friend @ankan1993.
I assume you are unlocked BL and your device is atleast not bricked.
Please follow this guide step by step to get a stock working device. This is for Honor V10 Indian Version C675 and I'm not responsible for your loss if you make this worst by trying this on other variants/models or if you choose not to follow this guide properly.
I assume you are on Berkley TWRP with the latest version, unmodified one.
Downloads : (Keep both in your fastboot folder in PC)
Stock Recovery : https://drive.google.com/file/d/1WEUHRrba1dV3109e7h7b3Hp_aJhy0vM8/view?usp=sharing (stockrec.img)
Stock System Image : https://drive.google.com/file/d/1IABtk7HJ9ml6kOpytYHrnT6z3C1_9IfW/view
1. Enter TWRP and go to wipe -> Advanced -> Select system and data, and wipe them.
2. In TWRP, go back and Click Reboot button on main screen and reboot to Bootloader.
3. Connect you device and open cmd_here (open as administrator) from fastboot folder. ( I assume fastboot is installed and working in your system. You can check by the command "fastboot devices" . Device should show there. )
4. Type "fastboot flash recovery_ramdisk stockrec.img" (It should complete without error)
5. Once completes, Type "fastboot flash system system.img" (This may show error like "Invalid sparse file format". Ignore that and keep waiting for 10-12 minutes until the system gets flashed completely.)
6. Once it gets completed, disconnect your device and then press Vol up + power, until it screen shows stock recovery.
7. In stock recovery, use factory reset and cache wipe option one by one and then reboot.
Hit thanks if you think it helped :fingers-crossed:
Finally, after days, after being tormented by the bugs of custom Roms we have something to cheer about. Kudos Oreopie! Cheers to the long hours.
Kudo's bro.. appreciate your efforts :good:
Will this method also lock the Bootloader to stock?
vardaraju said:
Will this method also lock the Bootloader to stock?
Click to expand...
Click to collapse
No, It won't.
Im unable to access bootloader/recovery mode after unlocking bootloader with volume down+power button, used twrp option to reboot to bootloader, but now i flashed stock recovery and this system image, device bootlooped and im unable to access bootloader, i hold the keys but instantly that warning screen comes up, please help..started using android since 2010 with HTC desire HD and never in my life i stepped in service center because those devices were brick proof, looks like honor made me step into service center
didnt work for me, followed exact steps as mentioned above but stock recovery keeps giving error while factory resetting the device, device ends up in bootloop,, this device is crazy, i need to connect my device to pc and then press voldown+ power to access bootloader else it just jumps to warning screen
aditya desai said:
didnt work for me, followed exact steps as mentioned above but stock recovery keeps giving error while factory resetting the device, device ends up in bootloop,, this device is crazy, i need to connect my device to pc and then press voldown+ power to access bootloader else it just jumps to warning screen
Click to expand...
Click to collapse
Obviously warning screen will come up, but at the same moment you have to just leave power button and keep on pressing vol down button, until you get into bootloader mode. It takes time bro and let me tell you one thing, no matter which mode you boot, no matter what ROM it is, once the bootloader is unlocked it implies that the unlocked warning screen will show and then it will be allowed to get into whatever mode you wish.
Try it as I told, be patient and follow the same guide exactly if you do not wish to visit service centre. There is nothing wrong happening with you other than an improper method being followed in haste
aditya desai said:
Im unable to access bootloader/recovery mode after unlocking bootloader with volume down+power button, used twrp option to reboot to bootloader, but now i flashed stock recovery and this system image, device bootlooped and im unable to access bootloader, i hold the keys but instantly that warning screen comes up, please help..started using android since 2010 with HTC desire HD and never in my life i stepped in service center because those devices were brick proof, looks like honor made me step into service center
Click to expand...
Click to collapse
In cases of a bootloop, follow this- https://forum.xda-developers.com/ho...ustom-rom-to-stock-rom-honor-view-10-t3802872
will the system image work on honor 7x??
Can you share the screenshot of the about phone screen please
Anyone got it working? the stock recovery keeps showing error when factory resetting the device, error shows some where at 12%, it just shows exclamation mark, ROM doesn't boots up
Not working!
Rj_Param said:
Not working!
Click to expand...
Click to collapse
What is the issue and what you want to do.
shashank1320 said:
What is the issue and what you want to do.
Click to expand...
Click to collapse
I am on lineage and want to go back to the stock ROM. I also have backup of my system but i have tried many times after flashing the system image it is going in boot loop so i have followed all methods and it's not working..
Every time i have tried after flashing system whenever i go to recover to do factory reset it failed. Even i tried to lock the bootloader but nothing seems to be working.
Rj_Param said:
I am on lineage and want to go back to the stock ROM. I also have backup of my system but i have tried many times after flashing the system image it is going in boot loop so i have followed all methods and it's not working..
Every time i have tried after flashing system whenever i go to recover to do factory reset it failed. Even i tried to lock the bootloader but nothing seems to be working.
Click to expand...
Click to collapse
Because on custom you are on 8.1 and twrp doesn't support yet.
May be you can try dload the b161 version which is out on firmware finder now.
shashank1320 said:
Because on custom you are on 8.1 and twrp doesn't support yet.
May be you can try dload the b161 version which is out on firmware finder now.
Click to expand...
Click to collapse
I'll give it a try today...thanks
Invalid
as you mentioned, i m getting this error "invalid sprase file format". I waited more than 30 mins, still i couldn't see any message like compeleted or success. Still showing only that error "invalid spase file format". Help me with this.
Tamilarasan_Indian said:
as you mentioned, i m getting this error "invalid sprase file format". I waited more than 30 mins, still i couldn't see any message like compeleted or success. Still showing only that error "invalid spase file format". Help me with this.
Click to expand...
Click to collapse
Invalid sparse error happens when trying to flash .IMG files in Windows system.
It can be easily solved by using Linux system.
thanks for the reply
miststudent2011 said:
Invalid sparse error happens when trying to flash .IMG files in Windows system.
It can be easily solved by using Linux system.
Click to expand...
Click to collapse
I dont have Linux , and tried to flash other SYSTEM.img file for honor v10 from other threads. It completed flashing but still am not able to login into phone successfully. Still stuck at bootloop. Help me

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