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How I have upgraded to Cyanogen COS 13 without loosing data on my rooted Oneplus One

Hi all,
I was fed up with waiting for a signed rom to update to Cyanogen 13 COS, so after quite a few attempts I found a solution!
Happy to share with you.
Step 1: back to stock recovery and stock CM 12.
I was on CM 12.1 YOG7DAS2K1.
Download the Fastboot image corresponding to you OPO from this very nice page: http://forum.xda-developers.com/oneplus-one/general/official-cm11s-roms-ota-updates-t2906746
In my case I downloaded: cm-12.1-YOG7DAS2K1-bacon-signed-fastboot.zip
Extract the zip file on you PC.
Then install ADB & Fastboot on you PC (see here: https://twrp.me/devices/oneplusone.html)
Then reboot your Oneplus One to Fastboot (Volume Up + On/off).
Then flash the following files from the cm-12.1-YOG7DAS2K1-bacon-signed-fastboot.zip file with the following commands:
fastboot flash recovery recovery.img
fastboot flash system system.img
fastboot flash cache cache.img (don't ask me why but it was required even if it just wipes the cache in the end)
DON'T FLASH BOOT, NOR DATA, of course...
Then reboot:
fastboot reboot
You should be back to your smartphone as before (if not sorry, something went wrong!!).
Step 2: Install CM 13!
Then, if you had the OTA pending (that was my case) just let Cyanogen apply it. This has worked like a charm for me, finally!!
If not, I am pretty sure, you can download it from the same page - http://forum.xda-developers.com/oneplus-one/general/official-cm11s-roms-ota-updates-t2906746 - and apply it manually via the stock recovery (volume down + on/off).
Step 3: TWRP
Then, if you want you can re-install TWRP and root your device. See: https://twrp.me/devices/oneplusone.html
I hope it will work for those who are also waiting for the signed image which doesn't come!!
Remember to backup your device with TWRP before doing anything (and to transfer your backup files to a PC, just in case you would fully wipe you OPO by mistake!!
Enjoy!

[Completed] Recovery not available

Hi,
Device is: Asus Zenfone 2, Z008
At some point I managed to brick it. Restored it using xFstk and some fastboot magic.
Now, the big issue is, I cannot boot to recovery.
I can load bootloader (do fastboot commands), chose "Recovery", but it will just boot normal into the OS. Droid with hazard doesn't appear, just normal boot.
Tried (not all at once)
fastboot erase cache
fastboot format cache
installing twrp
flashing stock recovery.img
No joy.
What am I missing?
Video on Youtube with the issue: https://www.youtube.com/watch?v=ESnxjGDKwWA

Hi !
A quick answer has been provided here https://forum.xda-developers.com/showpost.php?p=71063211&postcount=598
Try this command after placing this recovery img into the adb folder and boot into bootloader
fastboot devices
enter
(check if it is recognised) then
fastboot boot recovery.img
( where recovery.img should be the exact name of your recovery you want to boot into)
Keep an eye on that thread you already have posted , more users may have replied
Good luck !

Lenovo tab 3 tb3-850m rom

Can someone help me with a LENOVO TAB 3 TB3-850M stock rom or custom rom that i can flash ? I cannot find anywhere. Installed TWRP and file system got messed up, needed to repartition . Or a TB3-850F, they are pretty much the same

tzmst said:
Can someone help me with a LENOVO TAB 3 TB3-850M stock rom or custom rom that i can flash ? I cannot find anywhere. Installed TWRP and file system got messed up, needed to repartition . Or a TB3-850F, they are pretty much the same
Click to expand...
Click to collapse
Here is a link to my TB3-850F Stock Firmware Images. (/system, /boot, /recovery, /logo). You will need an unlocked bootloader, Minimal ADB & Fastboot v1.4 installed on your PC, proper USB Device Drivers, and the ability to boot into fastboot mode (or recovery mode, and boot into fastboot mode from there). Once you have downloaded my firmware images and are in fastboot mode, open a command window in your adb/fastboot directory with your Tab 3 properly connected to your PC. Type "fastboot devices" - if you are properly connected to your PC with the requisite drivers, the command window will return with your device serial number under "Connected Devices." Once you have ensured a proper connection, execute these commands to install the stock firmware:
fastboot oem fb_mode_set
fastboot flash system system.img
(At this point, because the system.img is a 3GB file, fastboot will automatically condense the file into a series of "sparsechunk" images, which fastboot will flash to your device in series until completed. Note, this process can take a few minutes so be patient. Also, ensure you are using the minimal adb & fastboot from my link (v1.4 or newer) to ensure proper sparsechunk conversion)
fastboot flash boot boot.img
fastboot flash recovery recovery.img
fastboot flash logo logo.img
fastboot erase cache
fastboot erase userdata
fastboot oem fb_mode_clear
You should now be restored to pure stock firmware condition. Note: this stock firmware is for the Lenovo Tab 3 8"/TB3-850F and has not been tried on the TB3-850M variant. You flash these images at your own risk. Good luck.
https://forum.xda-developers.com/android/general/rom-lenovo-tab-3-8-tb3-850f-android-6-0-t3593043

Updated Stock 6.0 ROM posted. Force encryption and dm-verity disabled. TWRP flashable zip.
https://forum.xda-developers.com/android/general/rom-lenovo-tab-3-8-tb3-850f-t3617594

phone booting into default recovery even after flashing twrp (xiaomi redmi note 4)

whenever i try to go into recovery mode, it takes me to the default one even after i flashed twrp. my bootloader is unlocked and i flashed twrp several times. even when i use the command prompt from fastboot mode it still takes me to the default recovery. any ideas to what's wrong?

Asafbzm said:
whenever i try to go into recovery mode, it takes me to the default one even after i flashed twrp. my bootloader is unlocked and i flashed twrp several times. even when i use the command prompt from fastboot mode it still takes me to the default recovery. any ideas to what's wrong?
Click to expand...
Click to collapse
This could be a solution or a workaround:
"Hello i just had a personal experience with my Asus zenfone selfie Z00T Stock recovery kept replacing TWRP. (Boot loader already unlocked)
This is how i got around it i downloaded the latest TWRP for my device and placed directly in minimal adb and fastboot app folder then i renamed it to recovery .
then i put my device in fastboot mode using the buttons on the phone and After i ran minimal adb and fastboot app as admin then i typed fastboot flash recovery recovery.img
once done i then i typed fastboot boot recovery.img. and my phone booted to twrp recovery then i selected reboot recovery directly on my phone and to finish reboot system (still in twrp) that's it.
(OEM commands to boot from fastboot to recovery do not work on some devices )
it only worked for me eventually because i downloaded the latest TWRP from the official TWRP website.
The idea is to flash the custom recovery and then booting from the custom recovery.img that you just used to flash (the one still on the pc) using minimal adb and fastboot app.
IT may not work on all devices as the commands may change from one device to another but the idea stays the same. (example for nexus fastboot -c "lge.kcal=0|0|0|x" boot recovery.img)
I hope this will help some people out."

sill not booting into twrp
Tiqqy said:
This could be a solution or a workaround:
"Hello i just had a personal experience with my Asus zenfone selfie Z00T Stock recovery kept replacing TWRP. (Boot loader already unlocked)
This is how i got around it i downloaded the latest TWRP for my device and placed directly in minimal adb and fastboot app folder then i renamed it to recovery .
then i put my device in fastboot mode using the buttons on the phone and After i ran minimal adb and fastboot app as admin then i typed fastboot flash recovery recovery.img
once done i then i typed fastboot boot recovery.img. and my phone booted to twrp recovery then i selected reboot recovery directly on my phone and to finish reboot system (still in twrp) that's it.
(OEM commands to boot from fastboot to recovery do not work on some devices )
it only worked for me eventually because i downloaded the latest TWRP from the official TWRP website.
The idea is to flash the custom recovery and then booting from the custom recovery.img that you just used to flash (the one still on the pc) using minimal adb and fastboot app.
IT may not work on all devices as the commands may change from one device to another but the idea stays the same. (example for nexus fastboot -c "lge.kcal=0|0|0|x" boot recovery.img)
I hope this will help some people out."
Click to expand...
Click to collapse
i've just tried this but the 'fastboot boot recovery' command just turn the phone back on from fastboot. thanks anyways!

Tiqqy said:
This could be a solution or a workaround:
"Hello i just had a personal experience with my Asus zenfone selfie Z00T Stock recovery kept replacing TWRP. (Boot loader already unlocked)
This is how i got around it i downloaded the latest TWRP for my device and placed directly in minimal adb and fastboot app folder then i renamed it to recovery .
then i put my device in fastboot mode using the buttons on the phone and After i ran minimal adb and fastboot app as admin then i typed fastboot flash recovery recovery.img
once done i then i typed fastboot boot recovery.img. and my phone booted to twrp recovery then i selected reboot recovery directly on my phone and to finish reboot system (still in twrp) that's it.
(OEM commands to boot from fastboot to recovery do not work on some devices )
it only worked for me eventually because i downloaded the latest TWRP from the official TWRP website.
The idea is to flash the custom recovery and then booting from the custom recovery.img that you just used to flash (the one still on the pc) using minimal adb and fastboot app.
IT may not work on all devices as the commands may change from one device to another but the idea stays the same. (example for nexus fastboot -c "lge.kcal=0|0|0|x" boot recovery.img)
I hope this will help some people out."
Click to expand...
Click to collapse
Work for me. Thanks buddy

This works, thumb up
Asafbzm said:
i've just tried this but the 'fastboot boot recovery' command just turn the phone back on from fastboot. thanks anyways!
Click to expand...
Click to collapse
i have suffered with the same problem for hours until i decided to come here and look for related article , it actually worked and made me wonder that it wasn't that hard to fix it , i just rebooted fastboot and flashed twrp and in the end typed 'fastboot reboot recovery.img
that solved my suffering within 5 seconds. thank you for sharing the knowledge

Tiqqy said:
This could be a solution or a workaround:
"Hello i just had a personal experience with my Asus zenfone selfie Z00T Stock recovery kept replacing TWRP. (Boot loader already unlocked)
This is how i got around it i downloaded the latest TWRP for my device and placed directly in minimal adb and fastboot app folder then i renamed it to recovery .
then i put my device in fastboot mode using the buttons on the phone and After i ran minimal adb and fastboot app as admin then i typed fastboot flash recovery recovery.img
once done i then i typed fastboot boot recovery.img. and my phone booted to twrp recovery then i selected reboot recovery directly on my phone and to finish reboot system (still in twrp) that's it.
(OEM commands to boot from fastboot to recovery do not work on some devices )
it only worked for me eventually because i downloaded the latest TWRP from the official TWRP website.
The idea is to flash the custom recovery and then booting from the custom recovery.img that you just used to flash (the one still on the pc) using minimal adb and fastboot app.
IT may not work on all devices as the commands may change from one device to another but the idea stays the same. (example for nexus fastboot -c "lge.kcal=0|0|0|x" boot recovery.img)
I hope this will help some people out."
Click to expand...
Click to collapse
I had the same issue on Poco F1 and this worked for me as well! Pleasant surprise. First result on google was this article and it worked, 2 minutes work.

Lamantin001 said:
I had the same issue on Poco F1 and this worked for me as well! Pleasant surprise. First result on google was this article and it worked, 2 minutes work.
Click to expand...
Click to collapse
Okay, I was a bit too early with that. The next time I turned off the phone and tried booting to recovery (Vol up+pwr), I got booted into factory recovery (mi-recovery 3.0) :/

Lamantin001 said:
Okay, I was a bit too early with that. The next time I turned off the phone and tried booting to recovery (Vol up+pwr), I got booted into factory recovery (mi-recovery 3.0) :/
Click to expand...
Click to collapse
Update:
I found the solution. I followed the steps in this article:
How can I keep MIUI from overwrite TWRP with stock recovery after a ROM flash?
I'm on fw Global 9.6.6.0. (Bought the phone 'bogus' unlocked with "fake" 9.6.4.0, bricked it while trying to restore chinese fw and re-lock bootloader using miflash - I'm not doing that again brought it back to life using the steps from...
forum.xda-developers.com

Asafbzm said:
whenever i try to go into recovery mode, it takes me to the default one even after i flashed twrp. my bootloader is unlocked and i flashed twrp several times. even when i use the command prompt from fastboot mode it still takes me to the default recovery. any ideas to what's wrong?
Click to expand...
Click to collapse
Try this:
when you are in fastboot mode type:
Code:
fastboot boot recovery.img
This command will boot your phone to twrp. Install twrp .zip file (there are 2 options when installing .img or .zip)
after this go to ADB/Sideload - This is in Advanced section
Then swipe to start a sideload. Now on your pc type:
Code:
adb sideload recovery.zip
This worked for me. I hope this works for you too

Nexus 5 - completely erased - bootloader access existent

Hello everyone,
this is about the Nexus 5 16gb.
It has been completely erased and no backup has been done by the previous owner :silly: and he asked for help. I am a complete noob myself and could only do the below listed things thanks to this forum.
It was completely empty when I received it (as far as I can tell), but I can access the bootloader. I put a costum recovery on it with the help of this forum. When in costum recovery mode my computer identifies it as the Nexus 5 with the help of the Google Drivers and the SDK-Android (I presume) I installed previously.
I went to Google and was able to put a factory image on it from their collection of "hammerhead" for Nexus 5 (GSM/LTE).
I tried the 6.0.1 (MOB31E) and installed it via the flash-all.bat via CMD since this version was, according to the owner, installed before. It worked, as far as I could tell - data got copied on the phone.
When I restart the phone, the Google Logo with an opened lock blinks very slowly. The swirly loading screen I have seen on some Youtube videos for this model's OS does not appear. I presume that the phone does not recognize the flashed factory image?
My question is:
Do I need to try all of the factory images from Google until one works? Or is something so fundamentally lost (maybe somewhere in the booting process), that the phone cannot be repaired since the swirly loading screen does not appear?
Do I need to copy something else on the phone besides the factory image for it to start the booting process for the OS that I have installed via the flash-all.bat?
I am very lost - if someone could point me toward the right direction or even just toward the right kind of tutorial, I'd be very grateful.

You can flash the factory image using the following fastboot commands (subtitute file names to match the file names from the unzipped factory image):
fastboot flash bootloader bootloader.img
fastboot reboot-bootloader
fastboot flash radio radio.img
fastboot reboot-bootloader
fastboot flash system system.img
fastboot reboot-bootloader
fastboot flash userdata userdata.img
fastboot flash recovery recovery.img
fastboot flash boot boot.img
fastboot flash cache cache.img