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[Nexus 5] TWRP Install No Root

Hi,
Is it possible to install TWRP v3.0.0.0 on a LG Nexus 5 HAMMERHEAD v6.0.1 (MMB29Q) without rooting? Not that it's something I absolutely need to do but by browsing through different sites and tutorials, it seems possible although my own tests prove the contrary...
Firstly, on TWRP official website, it's written that you can:
Fastboot Install Method (No Root Required):
You will need the platform-tools from the Android SDK on your computer. Find the SDK Only section on the page linked and install the SDK and download only the platform-tools to get adb and fastboot binaries.
Windows users will need proper drivers installed on your computer. You can try the Naked ADB drivers or the Universal ADB drivers if you don't already have a working driver installed
On your device, go into Settings -> About and find the Build Number and tap on it 7 times to enable developer settings. Press back and go into Developer Options and enable USB debugging. From your computer, open a command prompt and type:
adb reboot bootloader
You should now be in fastboot mode. Download the correct image file and copy the file into the same folder as your adb and fastboot binaries. Rename the image to twrp.img and type:
fastboot flash recovery twrp.img
fastboot reboot
Note many devices will replace your custom recovery automatically during first boot. To prevent this, use Google to find the proper key combo to enter recovery. After typing fastboot reboot, hold the key combo and boot to TWRP. Once TWRP is booted, TWRP will patch the stock ROM to prevent the stock ROM from replacing TWRP. If you don't follow this step, you will have to repeat the install.
Click to expand...
Click to collapse
I tried this method but it didn't work at all:
After typing fastboot reboot, hold the key combo and boot to TWRP. Once TWRP is booted, TWRP will patch the stock ROM to prevent the stock ROM from replacing TWRP.
Click to expand...
Click to collapse
Even I booted directly to TWRP recovery mode after I manually flashed it, it obviously didn't patched the stock ROM since after I later booted the phone normally in Android system and rebooted in recovery mode, the stock recovery mode was back, no TWRP!
Secondly, when I used Nexus Root Toolkit (NRT) v2.1.4, I had no choice but to root if I wanted to flash the custom recovery (TWRP). I successfully rooted and installed TWRP permanently using the tool.
Therefore, is installing TWRP without rooting some kind of myth that maybe worked with previous Android build and TWRP versions or is there actually really a way to do so?

I just did it yesterday on the March patch but had to flash twrp twice. The first time it bypassed recovery and booted into the os. After booting back into the bootloader and flashing twrp again it did boot into twrp.
Sent from my Nexus 5X using XDA Free mobile app

To install TWRP, the phone needs to have an unlocked bootloader, not root.
You can flash TWRP using fastboot commands. After flashing TWRP in fastboot, use the volume and power button to boot directly into recovery.

[Guide] BQ Aquaris M10 (freezerhd) twrp & root

Hi,
as I did not find an English guide for rooting a BQ Aquaris M10 tablet and had some problems when trying to root my tablet, I want to post an guide how to root this tablet.
First of all:
- This guide is just from my experience and is not thoroughly tested. It's on your own if you risk bricking your device.
- If you get stuck in the process, in nearly all cases you can revert to stock with the MTK flash tool (can be found on mibqyyo.com) and the images provided by BQ on their website.
- I could not unlock the bootloader with the 1.X-Images (Lollipop), as the VolumeUp-Button didn't work in fastboot-mode and you need this button to confirm the unlock.
- Booting into recovery from start with VolumeUp and Power-Button. This doesn't work with the 1.X-images, too.
- This guide is not intended for users without experience in unlocking/rooting a device. If you don't know how to use adb, fastboot, recovery and things like that, don't try it!
- You will loose all your data during this process!!
Guide:
Modify boot.img, flash new firmware
SuperSU in systemless mode doesn't work on stock image, as the SuperSU installer can't extract boot.img. You have to repack boot.img.
I tried a SuperSU installer without systemless-mode, but device didn't even boot anymore afterwards.
This guide is derived from a Spanish tutorial on the HTCmania-forum ("Root M10 HD Marshmallow") by yquepongo. Thanks to him!
Get a firmware for your device from the BQ-website (should be Marshmallow, see above) and unzip it to a directory.
Extract the boot-verified.img in the firmware directory with a bootimg-extractor. There are various tools available.
I used bootimg.exe, because this was explained in the mentioned thread and I even used it with wine on Linux and it went well.
Search for cpiolist.txt in your extracted boot-verified.img and delete the first two lines:
mode:mtk
mtk_header_name:ROOTFS
Repack boot-verified.img and put it back in the firmware directory.
Flash the modified firmware with the MTK flash tool according to the tutorial on .mibqyyo.com (Title "Hard Reset for the smartphone range Aquaris and Aquaris E"). In short: Disconnect device, start Tool, load scatter file from firmware directory, choose firmware upgrade, start download, connect the device in power off state, download will start automatically.
This will delete all your data and put the device back to factory rom (hard reset)!!!
If you don't want to flash the complete firmware, you can flash only the boot-verified.img with "Download only" in the flash tool. I didn't try this and don't know if this is working.
Start your device, don't activate any security settings to prevent encryption of data partition.
Unlock bootloader, flash TWRP, install SuperSU
Enable developer settings on device and activate "OEM unlock" in developer settings.
Reboot into fastboot (adb reboot bootloader) and unlock bootloader (fastboot oem-unlock).
This will delete all your data!!! Reboot your system afterwards to make sure everything is still ok.
Do not activate any security settings and make sure your data partition is not encrypted!
The existing TWRP-image can't handle an encrypted data partition, you will end in a boot loop and have to start the whole process again!
Double check, your data partition isn't encrypted. (Settings - Security)
Reboot into fastboot (adb reboot bootloader) and flash the TWRP-image from the TWRP-site (fastboot flash recovery twrpxxx.img)
After reboot TWRP should start.
If you have checked that everything is ok (I would recommend a reboot into normal mode), you can install SuperSU with the standard-installer-zip in TWRP.
If you didn't modify your boot.img, the installer will give a warning that it cannot extract boot.img and you will not find any SuperSU on your system.
If you get stuck in bootloop afterwards you can start anew and try it with another image flashed with MTK flash tool. (Firmware 2.2.0 from December 2016 for freezerhd worked in my case)
Maybe some steps could be shortened, but I haven't tried it.

hi zrfl,
i have a bq aquarius m8 with mm os.
the m8 has the same resolution (1280x800)
can i try the twrp recovery from the m10?
i will also root my m8 but i cant extract the boot-sign.img.
all tools fails.
have you any ideas?
update:
yesterday i opened the bootloader. the volume button works in fastboot-mode.
also i can unlock the boot image with the tools from: https://forum.xda-developers.com/showthread.php?t=2073775
but the unpack fails:
Android Image Kitchen - UnpackImg Script
by osm0sis @ xda-developers
Supplied image: unlokied-new.img
Setting up work folders . . .
Splitting image to "/split_img/" . . .
Android boot magic not found.
Error!. . .
Click to expand...
Click to collapse
i think this bq boot image use non-standard header. any ideas how to root this bq aquarius m8?
i buyed this tablet only to can use xposed.
i think, any android without root or xposed is useless

i opened a separate theme for this : https://forum.xda-developers.com/android/general/root-help-to-root-twrp-recovery-bq-t3536170

dreas74 said:
hi zrfl,
i have a bq aquarius m8 with mm os.
the m8 has the same resolution (1280x800)
can i try the twrp recovery from the m10?
i will also root my m8 but i cant extract the boot-sign.img.
all tools fails.
have you any ideas?
update:
yesterday i opened the bootloader. the volume button works in fastboot-mode.
also i can unlock the boot image with the tools from: https://forum.xda-developers.com/showthread.php?t=2073775
but the unpack fails:
i think this bq boot image use non-standard header. any ideas how to root this bq aquarius m8?
i buyed this tablet only to can use xposed.
i think, any android without root or xposed is useless
Click to expand...
Click to collapse
Sorry, but I can't help you there, as the M8 seems to be too different to the M10: I didn't have to unlock the boot.img, it was easy to unpack.

hi zrfl,
thanks for your reply. i contacted the developer osmOsis from the android image kitchen.
he will implement the bq specials in his tools.
more in the AIK thread: https://forum.xda-developers.com/showthread.php?t=2073775&page=108

this is the only way to root this device !!
thanks a lot ...

Thanks for this tutorial.
I've followed all the step, I'm able to flash the new recovery from the TWRP website but then I do a
Code:
fastboot reboot-bootloader
but the device reboot normally, just with a warning message during boot saying something like "This device is unlock and can't be trusted, it will boot in 5 seconds".
So I'm unable to access TWRP recovery, I guess when the device reboot it override the recovery partition because if I do a
Code:
adb reboot recovery
I end up in the Android recovery not TWRP.
Any idea ?
Thanks

ZazOufUmI said:
Thanks for this tutorial.
I've followed all the step, I'm able to flash the new recovery from the TWRP website but then I do a
Code:
fastboot reboot-bootloader
but the device reboot normally, just with a warning message during boot saying something like "This device is unlock and can't be trusted, it will boot in 5 seconds".
So I'm unable to access TWRP recovery, I guess when the device reboot it override the recovery partition because if I do a
Code:
adb reboot recovery
I end up in the Android recovery not TWRP.
Any idea ?
Thanks
Click to expand...
Click to collapse
Sorry, I have done this a long time ago and don't know what could be wrong:
You have the correct message, so unlock was successfull
You try to reboot in fastboot, so you flashed TWRP correctly in fastboot-mode
And I don't have the device at hand to try it myself. But I do have a few suggestions, what you could try:
Don't try to shorten procedure with unlock and flashing of TWRP at once. I'm not sure, but I think I had problems when I tried this. So do a normal reboot after unlock, before booting again into fastboot and flashing TWRP. (Now you have done this already )
I don't remember the proper boot command after flashing of TWRP. But
Code:
fastboot reboot-bootloader
doesn't make sense: You are already in bootloader.
Is there a boot-option in the bootloader where you could choose recovery?
Otherwise better power off and use the key-combination for booting into recovery: VolumeUp+Power.
I think, you have to repeat the procedure, as recovery seems to be overwritten: Boot into fastboot, flash TWRP, reboot into recovery. And avoid normal booting before first boot into TWRP!
Did you use the newest TWRP 3.1.0 from March 8th? I haven't tried this yet, so there could be the problem. You could try the previous one: 3.0.2 from last year.

Thanks, I succeed with the combo key (power + vol up) directly after the reboot process

Perfect it's working great now !

I did exactly what you wrote but SuperSU won't install because it cannot extract the ramdisk...

Hi @zrfl
Thanks for your posting!
I did as you suggested and successfully unlocked bootloader and installed TWRP 3.1.1. Your hint to modify the boot-verified was extremely helpful, as I wouldn't be able to unlock the bootloader otherwise.
However, I did not manage to install super su. And boy, I tried many different versions od regular/system/systemless supersu, each flashed according to the respective how-to.
I ended up either in a bootloop, or get stuck on the Android logo at boot.
Flashing goes well until this step:
"Decompressing ramdisk
--- Failure, aborting"
I checked ramdisk compression of boot with Carliv image Kitchen and it tells me that it already is set to "gz" and not another compression TWRP can't handle.
Please help me on how to flash SuperSu.
Thanks and best
Tom

There is something wrong: TWRP does not need a modified boot.img.
Maybe newer ROM-versions are different.

Solution for geting root on BQ M10 FHD on stock rom 2.6.2: Start with a fresh system and install magisk beta (not stable), reboot and root is granted!
tanks a lot to @scafroglia93!

Are there any Custom ROM's
For this Tablet like CM/LineageOS AOSP etc?
Googling reveals nothing and Considering all the kernel mods like hardcore and Ubuntu touch I find it hard to believe that nobody has built one of the later.

I've been searching for custom ROMs too. Apparently, there are none available at present. However, I'd highly appreciate lineage rom.

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?

Cannot get ROMs to boot after installing from TWRP

I have had success flashing two ROMS (Lineage OS with MicroG and HavocOS) so far, but at some point, I am now getting nowhere fast trying to reinstall either of these after several clean attempts. I keep ending up at a black screen with a blue light and no more TWRP and no more bootable OS.
Here's what I did...
Starting fresh... Used MSMDownloadTool V4 to install OOS (enchilada_22_O.09_180517) then updated with local update file (OnePlus6Oxygen_22_OTA_030_all_1904032206)
Then, enable developer options, OEM unlock, USB debugging, advanced reboot
Reboot to fastboot and execute "fastboot oem unlock" in Powershell with admin rights
Reboot to OOS, then check developer options again, all good
Reboot to fastboot, execute "fastboot boot twrp-3.2.3-x_blu_spark_v9.91_op6.img"
Reboot to TWRP, install Magisk-v19.2.zip, reboot to OS (to verify root)
Reboot to TWRP, install ROM zip, then install twrp-3.2.3-x_blu_spark_v9.91_op6.
Select Reboot to Recovery within TWRP
And then.... black screen with blue solid light. Can't load TWRP nor can I boot into OS.
I have also tried wiping during some of these attempts and that didn't help. At one point, I had a bricked phone with no bootloader/fastboot, but saved it with the MSM tool.
Can someone please tell me what am I doing wrong? I see some ROMs (such as Lineage0S 16 with MicroG) saying to install a stock OOS twice along with TWRP, then the LOS ROM+TWRP, but I could never get beyond the first attempt at installing stock ROM+TWRP. Same thing happens.
EDIT: Resolved below.

Do you have magisk installed after reboot twrp ?

cypress16 said:
I have had success flashing two ROMS (Lineage OS with MicroG and HavocOS) so far, but at some point, I am now getting nowhere fast trying to reinstall either of these after several clean attempts. I keep ending up at a black screen with a blue light and no more TWRP and no more bootable OS.
Here's what I did...
Starting fresh... Used MSMDownloadTool V4 to install OOS (enchilada_22_O.09_180517) then updated with local update file (OnePlus6Oxygen_22_OTA_030_all_1904032206)
Then, enable developer options, OEM unlock, USB debugging, advanced reboot
Reboot to fastboot and execute "fastboot oem unlock" in Powershell with admin rights
Reboot to OOS, then check developer options again, all good
Reboot to fastboot, execute "fastboot boot twrp-3.2.3-x_blu_spark_v9.91_op6.img"
Reboot to TWRP, install Magisk-v19.2.zip, reboot to OS (to verify root)
Reboot to TWRP, install ROM zip, then install twrp-3.2.3-x_blu_spark_v9.91_op6.
Select Reboot to Recovery within TWRP
And then.... black screen with blue solid light. Can't load TWRP nor can I boot into OS.
I have also tried wiping during some of these attempts and that didn't help. At one point, I had a bricked phone with no bootloader/fastboot, but saved it with the MSM tool.
Can someone please tell me what am I doing wrong? I see some ROMs (such as Lineage0S 16 with MicroG) saying to install a stock OOS twice along with TWRP, then the LOS ROM+TWRP, but I could never get beyond the first attempt at installing stock ROM+TWRP. Same thing happens.
Click to expand...
Click to collapse
What I did is this...
After your first step which is "Starting fresh... Used MSMDownloadTool V4 to install OOS (enchilada_22_O.09_180517) then updated with local update file (OnePlus6Oxygen_22_OTA_030_all_1904032206)", I install again the "OnePlus6Oxygen_22_OTA_030_all_1904032206" to follow the step that requires flashing OOS twice.
Then I followed the steps in https://forum.xda-developers.com/oneplus-6/how-to/tutorial-decrypt-flash-rom-pie-oreo-roms-t3838643, this is to decrypt my device and to be able to flash any ROM infinite times without corrupting again my device.

I suggest you use a newer MSM tool to restore to stock. Then, do local upgrade twice to install the zip on the both slots. Then proceed to unlock the bootloader.

Anytime u flash twrp u need to flash magisk too (no need to reboot if you are using the same slot before flashing magisk) , I think on the last step u forget that
Just boot to twrp and flash magisk again

I wrote that before ? 2e post

Thanks for all the tips. Finally got it working. This is nothing like the Samsung phones I'm used to.....
Here is the process I followed and I finally have a working system with the Havoc Rom, MicroG, the blu_spark kernel and magisk:
MSMDownloadTool V4 to install OOS (enchilada_22_O.09_180517) then updated with local update file (OnePlus6Oxygen_22_OTA_030_all_1904032206)
Unlock booloader
Flash TWRP
Reboot to TWRP and flash oos 9.0.5 ota zip and flash TWRP
Reboot to TWRP
Flash oos 9.0.5 ota zip and TWRP again
Reboot to TWRP
Factory reset
Flash ROM
Reboot TWRP
Flash Magisk
Flash Kernel
Reboot to TWRP
Flash microg
Resume normal life after two excruciating days of failed attempts

Badly f*d Op7Pro. Need help to revert to stock

Hi,
First of all, yes, I have checked the other threads that talk about reverting to stock and I am still stuck.
So I installed Kang OS which is Android 11, and now I want to revert to stock. I have tried downloading multiple different versions of the fastboot ROM from the page https://androidfilehost.com/?w=files&flid=294300 and run the flash all batch file and every time I am either getting stuck in a boot loop or getting the Verity Crash Dump Screen. I have managed to reach the fastboot screen, and I am waiting on the fastboot screen, for someone to show me some way.
Thanks in Advance.

If you used a pin then your storage is encrypted and the rom you are trying to flash can't use it, that's why you're most likely stuck at boot.
I ran into the same issue and posted about it in the same thread. I think we will need a new version of TWRP as 3.4.0-0 would not accept my pin which had not changed.
To fix your issue, sadly, you'll need to wipe your storage:
Boot the phone into fastboot mode
Attach your USB cable to the phone/PC
Download and unzip the file I've attached (ADB/Fastboot)
Launch an elevated command window in the folder you extracted the attached zip to
Try the command fastboot devices and ensure that it reports the device correctly, if not then you need to install the latest OnePlus drivers
Type the following in the command window : fastboot -w (This will wipe the storage)
Try your rom again (TWRP should remain as the recovery if you had flashed it already, if not then copy the latest TWRP img file to the same folder as the ADB/Fastboot tools, use fastboot and type boot twrpfilename.img this will make the phone boot into TWRP recovery, you can then copy over the TWRP zip and flash it to recovery using the booted version of TWRP)
Once you've done the above you shouldn't really need to use the fastboot scripts as the latest rom should just flash from TWRP.

Get msm download tool for guacamole which is the codename of the op7p. I know the shorts with the global version I am unsure if this works with T-Mobile or others?

MSM is a bit of a severe fix when they've already confirmed they can still get fastboot, MSM is for completely bricked phones that can't access anything. Wiping the storage and going to fastboot will allow them to just flash recovery then flash the stock rom. Way easier.

Boot into twrp. Then format data. Phone will boot then.