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[Q] Error on Installing TWRP and Can't recover to ICS, same Problem?

I have had my TF700 for a while, and merrily went from ICS through the various OTA upgrades to 4.2.1
I have attempted to follow along the "All in One Guide" in order to get Rooted so I can install Cyanogenmod or alternative to get rid of the crapware delivered by Asus. But I seem to get stuck when trying to "Flash" anything. Or at least I think so.
I unlocked the bootloader using the apk provided by Asus. Bootloader shows as unlocked when booting.
adb devices shows my device attached. When booted into fastboot mode fastboot devices shows my device attached.
I have also done a complete data wipe, not that that should matter.
1st, I have tried to install twrp using GooManager, and the fastboot method. Using GooManager, the file downloads and then nothing seems to happen. GooManager will also not reboot to recovery. Using the Fastboot method I get "error: cannot load 'twrp.blob': No error". I have downloaded the file multiple times and it does not appear to be corrupted.
I have tried to roll back to ICS by downloading the correct firmware, renaming it and copying to my SDCard, then booting into recovery. US_epad_user_9_4_5_30_20120907_UpdateLauncher.zip I only get the Android guy with the red triangle until it reboots.
I have also tried http://forum.xda-developers.com/showthread.php?t=1929712 but this does nothing as twrp is not installed and the regular recovery doesn't do anything.
What should I try next? It would seem like I'm missing something obvious.

When you download firmware from Asus, the file you need to put on your SDCard is not the file you downloaded, but the zip file contained within. Its a zip in a zip. Extract the file you downloaded and you will find another zip file inside and that's the one you rename and copy to your SDCard. Also make sure your SDCard is formatted FAT32. exFAT will not work and is the default Sandisk format.

Got rolled back to ICS but..
I successfully rolled back to ICS .30
Now adb fails to recognize the device. Previously it did recognize. I reinstalled the drivers in fastboot mode and "normal" mode. I have tried the universal naked drivers and the Asus drivers. fastboot reboot will successfully reboot the device, but nothing shows up when I do a adb devices or fastboot devices.
fastboot -i 0x0B05 flash recovery twrp.blob Gets the same error, error: cannot load 'twrp.blob': No error.
When I run through *** Rooting Your TF700 with Debugfs automated root *** I get the error "You must install device specific drivers...."

Fixed
Adhar said:
I successfully rolled back to ICS .30
Now adb fails to recognize the device. Previously it did recognize. I reinstalled the drivers in fastboot mode and "normal" mode. I have tried the universal naked drivers and the Asus drivers. fastboot reboot will successfully reboot the device, but nothing shows up when I do a adb devices or fastboot devices.
fastboot -i 0x0B05 flash recovery twrp.blob Gets the same error, error: cannot load 'twrp.blob': No error.
When I run through *** Rooting Your TF700 with Debugfs automated root *** I get the error "You must install device specific drivers...."
Click to expand...
Click to collapse
I discovered that I couldn't install twrp as I was in the wrong folder when executing the command. I needed to cd to the folder that contained the .blob file. Then it was trivial to use twrp to flash the root.zip file and gain root, and then flash cyanogenmod 10.0, wipe, and then reboot.
Everything is fine, now downloading Google apps.

Adhar said:
I discovered that I couldn't install twrp as I was in the wrong folder when executing the command. I needed to cd to the folder that contained the .blob file. Then it was trivial to use twrp to flash the root.zip file and gain root, and then flash cyanogenmod 10.0, wipe, and then reboot.
Everything is fine, now downloading Google apps.
Click to expand...
Click to collapse
When I read "seems like I'm missing something obvious" from your original post I went back and re-read it looking for the obvious. It wasn't immediately apparent what was wrong. If you hadn't posted the name of the firmware file it wouldn't have been obvious to me either but I thought I recognized it as the downloaded not the internal zip file name and verified it with my downloaded firmware. Glad to help and that you got it all worked out.

screwed up , any assist appreciated

I can access bootloader and twrp
if i type fastboot devices it recognizes my phone but on my pc it's not showing in explorer except under devices and printers as just android
trying to flash OnePlus6Oxygen_22_OTA_015_all_1808102118_770880-FASTBOOT.zip in twrp.
Getting invalid zip file format, error
If i try and run mauronofrio's fastboot rom flash-all-partitions.bat on pc i get not recognized as an internal or external command in cmd window

Redwingsyummy said:
I can access bootloader and twrp
if i type fastboot devices it recognizes my phone but on my pc it's not showing in explorer except under devices and printers as just android
trying to flash OnePlus6Oxygen_22_OTA_015_all_1808102118_770880-FASTBOOT.zip in twrp.
Getting invalid zip file format, error
If i try and run mauronofrio's fastboot rom flash-all-partitions.bat on pc i get not recognized as an internal or external command in cmd window
Click to expand...
Click to collapse
hello
you cant flash fastboot rom in twrp . download one that is not fastboot . links in this thread : https://forum.xda-developers.com/oneplus-6/how-to/oneplus-6-mirrors-official-oxygen-os-t3792244
about not recognized as an internal ... . make sure you installed adb and fastboot drivers .

lalala
i can't get a recovery flashable zip to the phone now anyway.
i did reload adb and oneplus drivers this morning and then again after your reply to make sure.
i did notice the phone shows as a oneplus6 in devices while in twrp but when i switch to bootloader it changes to just android device?
So still stuck.
Between last night and this morning have many hours trying to get it working somehow.

no twrp just bootloader now
rebooted the phone and lost twrp.
tried to flash it and it says failed remote failed to load authenticate boot image :load error
i need to start fresh somehow
*I can't even turn the phone off now, it reboots to bootloader instead!!!!

Try this tool https://forum.xda-developers.com/oneplus-6/how-to/tool-msmdownloadtool-v4-0-international-t3798892

How to install TWRP after Magisk?

How to install TWRP after Magisk?
I have a OnePlus 6 running Oxygen OS 9.0 and I managed to install Magisk by obtaining the stock boot image and using the magisk manager app to patch it to include magisk, then I flashed the patched boot.img using fastboot and ADB.
The reason I did it this way is that every time I tried to boot with twrp.img in order to flash twrp.zip, I would run into a screen saying Qualcomm CrashDump Mode and TWRP wouldn't boot.
Now I want to install TWRP and I was wondering if there is any way of doing it by using Magisk, so I wouldn't have to boot twrp.img.
Any help would be greatly appreciated.

Same problem here. Already tried to boot every version of TWRP without success.

abrahammurciano said:
How to install TWRP after Magisk?
I have a OnePlus 6 running Oxygen OS 9.0 and I managed to install Magisk by obtaining the stock boot image and using the magisk manager app to patch it to include magisk, then I flashed the patched boot.img using fastboot and ADB.
The reason I did it this way is that every time I tried to boot with twrp.img in order to flash twrp.zip, I would run into a screen saying Qualcomm CrashDump Mode and TWRP wouldn't boot.
Now I want to install TWRP and I was wondering if there is any way of doing it by using Magisk, so I wouldn't have to boot twrp.img.
Any help would be greatly appreciated.
Click to expand...
Click to collapse
If you have magisk manager with working root.... Then YES you can.... Just download Official TWRP app from GPlay... Open it give root permissions and follow the onscreen instructions.... Thats it...and yes use the zip not the img file

James Blode said:
If you have magisk manager with working root.... Then YES you can.... Just download Official TWRP app from GPlay... Open it give root permissions and follow the onscreen instructions.... Thats it...and yes use the zip not the img file
Click to expand...
Click to collapse
But there's no button to flash, I open the app, select flash recovery, select device, but theres no button to flash it.
See screenshot

do you have fastboot and adb installed on your computer? I assume so as you have oem unlocked to flash magisk, correct?
Copy the TWRP file that ends with .img to your desktop
if so, open a command prompt (windows key +R and type cmd press enter)
type "cd desktop" without quotes and press enter
type fastboot boot "twrp.img" (whatever the file name actually is)
Congrats, you are now in TWRP. But wait, there's more! if you reboot to system or other wise leave TWRP at this point you will revert back to stock. to flash recovery onto your device permanently, install the TWRP.ZIP (The ZIP is IMPORTANT) as it changes the boot on the OP6 to have the TWRP image (oh, by the way, there is no recovery partition on OP6 like previous devices [Thanks A/B partition!])
Now you can reboot to your hearts content. remember if you update OOS, you will lose the custom recovery, so flash the TWRP.zip after every update!

Denkai said:
do you have fastboot and adb installed on your computer? I assume so as you have oem unlocked to flash magisk, correct?
Copy the TWRP file that ends with .img to your desktop
if so, open a command prompt (windows key +R and type cmd press enter)
type "cd desktop" without quotes and press enter
type fastboot boot "twrp.img" (whatever the file name actually is)
Congrats, you are now in TWRP. But wait, there's more! if you reboot to system or other wise leave TWRP at this point you will revert back to stock. to flash recovery onto your device permanently, install the TWRP.ZIP (The ZIP is IMPORTANT) as it changes the boot on the OP6 to have the TWRP image (oh, by the way, there is no recovery partition on OP6 like previous devices [Thanks A/B partition!])
Now you can reboot to your hearts content. remember if you update OOS, you will lose the custom recovery, so flash the TWRP.zip after every update!
Click to expand...
Click to collapse
Yes I have fastboot and ADB on my computer (Linux btw), and as I mentioned it the first post, I already tried that, except that instead of booting into TWRP after "fastboot boot twrp.img" I got to a screen saying Qualcomm CrashDump mode (see attached image (the image might not be exactly the same as mine, I found that on the internet because I don't have my computer to reproduce it now)).

super odd. maybe your boot image is corrupt? still doesn't explain why fastboot boot isn't working though... Try bluSpark's TWRP image. it's a solid build and I am not having issues with it.
https://forum.xda-developers.com/oneplus-6/development/kernel-t3800965/page17
or you can also try swapping to the other partition by typing 'fastboot --set-active=_a' (or fastboot --set-active=_b) and booting to that recovery.
if that doesn't work for ya, try and restore stock via fastboot is my only suggestion:
https://forum.xda-developers.com/oneplus-6/how-to/rom-stock-fastboot-roms-oneplus-6-t3796665

[/COLOR]
abrahammurciano said:
Yes I have fastboot and ADB on my computer (Linux btw), and as I mentioned it the first post, I already tried that, except that instead of booting into TWRP after "fastboot boot twrp.img" I got to a screen saying Qualcomm CrashDump mode (see attached image (the image might not be exactly the same as mine, I found that on the internet because I don't have my computer to reproduce it now)).
Click to expand...
Click to collapse
I wonder if this problem has been solved? After having Root without TWRP since last year, I decided to flash TWRP now because I miss having a Nandroid backup. But just like op, right after I type in "fastboot boot TWRP.img", I end up with that Qualcomm crash dump error, resulting in a fastboot boot loop every time I restart the phone. My only recourse is to use the MSM flash tool that reflashes everything and returns the phone into factory stock. In the process wiping out all my data. I don't think there's anything corrupted
EDIT: the problem wasn't the procedure; it was the damned bootable TWRP .img files. I downloaded different TWRP.img versions, and they all failed to flash into temporary TWRP, except for this one that I found here: https://drive.google.com/open?id=1CJoBQ5ZuAExv27XLWwLMFYfHoLEu5YFJ You can use this bootable .img to flash any TWRP version compatible with your device

Does it work for Android 10?
oneplus 6 running oxygen os beta 30 with magisk 20.1 without twrp

Borat38 said:
[/COLOR]
I wonder if this problem has been solved? After having Root without TWRP since last year, I decided to flash TWRP now because I miss having a Nandroid backup. But just like op, right after I type in "fastboot boot TWRP.img", I end up with that Qualcomm crash dump error, resulting in a fastboot boot loop every time I restart the phone. My only recourse is to use the MSM flash tool that reflashes everything and returns the phone into factory stock. In the process wiping out all my data. I don't think there's anything corrupted
EDIT: the problem wasn't the procedure; it was the damned bootable TWRP .img files. I downloaded different TWRP.img versions, and they all failed to flash into temporary TWRP, except for this one that I found here: https://drive.google.com/open?id=1CJoBQ5ZuAExv27XLWwLMFYfHoLEu5YFJ You can use this bootable .img to flash any TWRP version compatible with your device
Click to expand...
Click to collapse
Please I need TWRP for Blackview BV9600 pro please share with me if you have a link to a webpage I may find it

James Blode said:
If you have magisk manager with working root.... Then YES you can.... Just download Official TWRP app from GPlay... Open it give root permissions and follow the onscreen instructions.... Thats it...and yes use the zip not the img file
Click to expand...
Click to collapse
Hello I'm having magisk root access and official TWRP app but can't use it for NAndroid backup, how can I use the app for backup and fishing custom ROM?

Root OOS 10.0.1

Hello, i was on android 10 open beta 2 with root
But while upgrading i ran into some complications and now i am on OOS 10.0.1 but dont have root
I tried to install twrp but after pushing through adb the screen says "fastboot mode" and stays there. And after typing fastboot reboot the phone reboots into home screen
I also tried to patch boot image of oos 10.0.1 but it enters into fastboot loop
Any way i can get root?

What happens when you're in fastboot and boot the twrp file?

Phantom Thief said:
What happens when you're in fastboot and boot the twrp file?
Click to expand...
Click to collapse
The whole screen turns black with the words "fastboot mode" in the center

ViperCDX said:
I tried to install twrp but after pushing through adb the screen says "fastboot mode" and stays there. And after typing fastboot reboot the phone reboots into home screen
Click to expand...
Click to collapse
Your description sounds a bit suspicious, like you aren't doing the right method. Or maybe you are not just using the right (precise) terminology. There is a lot of confusion by folks on how to boot/install TWRP properly on this device, so that is why I am pointing this out, and hope you can clarify more specifically so we can then help you.
You don't need to adb push the TWRP.img file to boot TWRP, and you don't "install" TWRP.img using fastboot either. You should be trying to fastboot boot twrp.img, with that img file on your computer.
You do need the Magisk zip on the phone (and adb push is one way); as well as the TWRP installer zip if you intend to install (not just boot) TWRP to the phone. The TWRP installer zip not completely necessary, if you want to just flash Magisk and achieve root (not have TWRP installed on the phone).
Also, are any error messages showing up on your command prompt on the computer, and if so what does it day exactly?
Might be best if you cut/paste your fastboot commands, or post a screenshot of your PC, so we can see exactly what commands you used, error messages, etc.

redpoint73 said:
Your description sounds a bit suspicious, like you aren't doing the right method. Or maybe you are not just using the right (precise) terminology. There is a lot of confusion by folks on how to boot/install TWRP properly on this device, so that is why I am pointing this out, and hope you can clarify more specifically so we can then help you.
You don't need to adb push the TWRP.img file to boot TWRP, and you don't "install" TWRP.img using fastboot either. You should be trying to fastboot boot twrp.img, with that img file on your computer.
You do need the Magisk zip on the phone (and adb push is one way); as well as the TWRP installer zip if you intend to install (not just boot) TWRP to the phone. The TWRP installer zip not completely necessary, if you want to just flash Magisk and achieve root (not have TWRP installed on the phone).
Also, are any error messages showing up on your command prompt on the computer, and if so what does it day exactly?
Might be best if you cut/paste your fastboot commands, or post a screenshot of your PC, so we can see exactly what commands you used, error messages, etc.
Click to expand...
Click to collapse
ok let me try to be as specific as possible.
First i put the "twrp-3.3.1-4-guacamole.img" file in the adb folder and "twrp-3.3.1-4-guacamole.zip" in the internal storage of my phone
Then i switched off my phone, pressed vol up and vol down and power button to enter fastboot mode
i connected my phone to my pc
opened cmd window in the adb folder
typed "fastboot devices" to check if connected
then "fastboot boot twrp-3.3.1-4-guacamole.img"
on pressing enter , i get the 2 ok messages on cmd window and at that point my phones screen goes completely black with "Fastboot mode" written in the center
And stays there that way
now if i type "fastboot reboot" the phone reboots to the home screen
Hope i made it a bit clear
Sorry cant post screenshots at this moment, i am on vacation and dont have my laptop with me

You're using the wrong twrp image. You have to use the one for android q. Unofficial build of twrp for android q is available on the development section. Get that image, fastboot boot twrp.img and then install magisk 20. You don't need to install the twrp zip. You can just boot the image from fastboot whenever you need a custom recovery.
If you absolutely want the recovery, then you can flash it (remember to get the zip for android q) from magisk and then do direct install of magisk then reboot.

kgs1992 said:
You're using the wrong twrp image. You have to use the one for android q. Unofficial build of twrp for android q is available on the development section. Get that image, fastboot boot twrp.img and then install magisk 20. You don't need to install the twrp zip. You can just boot the image from fastboot whenever you need a custom recovery.
If you absolutely want the recovery, then you can flash it (remember to get the zip for android q) from magisk and then do direct install of magisk then reboot.
Click to expand...
Click to collapse
Oh damn, didnt realise that, so silly of me
Will try the android q version and report back

ViperCDX said:
Oh damn, didnt realise that, so silly of me
Will try the android q version and report back
Click to expand...
Click to collapse
Good catch by the previous user, that you need to use an updated TWRP version.
Unofficial version -70 from the following thread is what you want (if you haven't found it already): https://forum.xda-developers.com/on...nt/recovery-unofficial-twrp-recovery-t3931322

redpoint73 said:
Good catch by the previous user, that you need to use an updated TWRP version.
Unofficial version -70 from the following thread is what you want (if you haven't found it already): https://forum.xda-developers.com/on...nt/recovery-unofficial-twrp-recovery-t3931322
Click to expand...
Click to collapse
Yeah i pushed the .70 version through fastboot then flashed the installer
And now i have twrp
However when i try to flash magisk zip through twrp, the phone enters into fastboot mode and does not enter home screen
I have to fastboot boot image to get out of it
I have tried magisk 20.1,20 and 19.4
Kindly help

Hello guys please help me if you know what is this? What can I do? it's bug in Android 10.0.1 or something wrong that show me every minute this error?Show me in every minute this Don't want communicate with E4:5F:8D:9C:06:1A.Wait your answer,thanks.

Failed root, stuck on unlocked bootloader warning message.

Hi everyone,
I have tried to get root priviledges following a guide from Droidwin.com to flash Magisk throught TWRP. At the very last step, after flashing Magisk 19.3 throught TWRP when I tried to reboot my phone, it gets stuck on the "unlocked bootloader warning message", which is supposed to disappear after a few seconds and move on to the boot animation.
It seems like I can go to the stock recovery, which shows fastboot and wipe actions. At this point, I can acces the fastboot screen, but the device is not listed using the ADB command "adb devices", nothing is find.
I'm wondering, what can I try to restore the phone ? I thank you in advance for any suggestions.
Here are some additionnal informations:
---Device---
Oneplus nord running OxygenOS 10.5.5, european version.
---What I've done to get in this situation---
Unlock bootloader using ADB
Launch an TWRP image file using ADB
"Try" to root using Magisk 19.3 zip throught TWRP
Power off from recovery (using TWRP touch interface), but the guide tells to click reboot at this step ...
Get stuck on the warning message, not having any boot animation.

Try to boot in Fastboot.
Turn the Nord Off and start it with plus minus and Power.
Boot TWRP with "Fastboot boot "TWRP File name.img" and flash magisk 20.4

Thank you @denndenn.
I'm able to launch TWRP using the ADB command "fastboot boot [twrpfile].img". But when TWRP starts, it asks me for my decryption password, I type it, brief lines of code says "unable to read system/apex" before showing the home page of TWRP. Someone knows what this means, and if that can be the cause ?
I've then tried to reflash Magisk 19.3, which lead to the same result. I couldn't figure out how load Magisk 20.4 to my internal storage in order to flash it trought recovery ... Do you know how to flash a file which is not on my phone ?

Search forum....
Msm tool oneplus nord wipes phone but fixes any issues

thibdur said:
Thank you @denndenn.
I'm able to launch TWRP using the ADB command "fastboot boot [twrpfile].img". But when TWRP starts, it asks me for my decryption password, I type it, brief lines of code says "unable to read system/apex" before showing the home page of TWRP. Someone knows what this means, and if that can be the cause ?
I've then tried to reflash Magisk 19.3, which lead to the same result. I couldn't figure out how load Magisk 20.4 to my internal storage in order to flash it trought recovery ... Do you know how to flash a file which is not on my phone ?
Click to expand...
Click to collapse
Plug your phone to your PC while in TWRP, then you can use adb to push files to your phone, for example with adb push magisk.zip /sdcard. Then, flash Magisk in TWRP.

How about flashing stock boot to see if your OPN boots to system again and then simply load Magisk zip to your internal storage and then flash via TWRP?

Thank you a lot for your suggestions !
Here is the solution in my case :
Because fastboot was working, I was able to flash stock oxygen rom, and get every working, but it needs to erase all your data.
You can find a guide on the XDA topic "[ROM][STOCK][FASTBOOT][OPN] Stock Fastboot ROMs for OnePlus Nord". The rom list have the lastest roms version (09/2020), and the process is super automated.
Have a good week-end XDA !