How to flash and root OnePlus 3T on Linux

Update

2019-12-29:
- update TWRP to merged OnePlus 3/3T version 3.3.1-1 ;
- update no-verity-opt-encrypt to 6.1.zip.
- update Magisk to v20.1, magisk uninstaller
2019-05-19:
- bump TWRP to merged OnePlus 3/3T version 3.3.0-1 ;
2018-aug-04:
- bump TWRP to merged OnePlus 3/3T version 3.2.2.0 ;
- add link to Magisk Manaager, 5.8.3 APK, Magisk 16.7 and Magisk Uninstaller 16.7 ;
- add section ROM install with link to Official ROM and Resurrection Remix OS download page ;
- add section OpenGapps
2017-dec-07:
- successful with OnePlus 3T OxygenOS Open Beta 19
- update link to latest TWRP image to fetch twrp-3.2.0-0-oneplus3t.img ;
- update no-verity-opt-encrypt-6.0.zip.
2017-jun-29:
- require SuperSU-v2.82-201705271822.zip to fix boot blank screen ;
- successful with OnePlus 3T OxygenOS Open Beta 9
2017-jun-26:
- add link to fetch twrp-3.1.1-2-oneplus3t.img ;
- update no-verity-opt-encrypt-5.1.zip.
2017-jan-05:
- fix SuperSU with no-verity-opt-encrypt-5.0.zip and SuperSU-v2.82-201705271822.zip² ;

Requirements

Disclaimer: I've already done those kind of install on different phones and I'm familiar with the steps. So be sure to read the resources to get an understanding of what happens.

battery are >60% ;
know what you are doing?
remember that version used worked for me.

Screenshots are not mine, thanks to their author.

Flashing Recovery to TWRP

Flashing require to do a factory reset. Backup your data.

Prepare Phone and Computer

enable Developer Options
in Settings -> About Phone -> Build Number (at the bottom)
by tap on it for 5-7 times to enable Developer Options
enable USB Debugging
in Settings -> Developer Options -> USB Debugging.
enable OEM Unlocking (in the same list).

Install adb and fastboot tooling:

 apt install android-tools-adb android-tools-fastboot

Install Recovery

Reboot to bootloader either with ~~adb reboot bootloader~~ or through power button ;
Unlock the bootloader:
```
 sudo fastboot oem unlock
```

Download the latest TWRP image to flash ;

curl --referer https://eu.dl.twrp.me/oneplus3/twrp-3.3.1-1-oneplus3.img.html --location --remote-name https://eu.dl.twrp.me/oneplus

3/twrp-3.3.1-1-oneplus3.img

Verify it

 image_to_flash=twrp-3.3.1-1-oneplus3.img
 curl --location --output twrp-publickey.asc https://dl.twrp.me/public.asc
 gpg --import twrp-publickey.asc
 gpg --verify "$image_to_flash"{.asc,}

Flash the recovery with TWRP:

 sudo fastboot flash recovery "$image_to_flash"

Reboot to recovery to wipe cache ;
Reboot to recovery to mount the device ;

Rooting with Magisk

Install SuperSU
Download Magisk Manager , Magisk-uninstaller 16.7 and Magisk 16.7
and install

Rooting with SuperSU

Download latest SuperSU and no-verity-opt-encrypt (dm-verity and forced encryption disabler) ;
Copy to your smartphone Internal Storage directory (using nautilus or _nemo_¹) ;
install both of them with TWRP ;
reboot and enjoy!

Root

The rooting procedure given here is not a data-loss process but it won’t hurt to have a backup of your smartphone’s personal data.

source

Installing ROM

I'm using either the official ROM, ~~beta~~ or Resurrection Remix OS.

Copy the ROM's zip on your device
install it through TWRP

Installing OpenGApps

OpenGApps ARM64 Pico

⚠️ If Google service keep crashing you might want to backup your data and wipe the system and data partition.

⚠️ Troubleshooting

No write access to storage in TWRP? Wipe data/cache (≠ format data)
Rom not booting? Reinstall recovery and ROM…

Resources

How to Root the OnePlus 3T
How To Flash TWRP Recovery And Root OnePlus 3T - freeandroidroot ;
How to root opt using Linux - forums.oneplus.net ;
OnePlus 3T: How to Unlock Bootloader | Flash TWRP | Root - devs-lab.com ;
SuperSU download page - www.supersu.com.
no-verity-opt-encrypt download page - build.nethunter.com.

Footnote

¹: I didn't manage to access my smartphone storage with Dolphin ;
²: SR1-SuperSU-v2.79-SR1-20161221223537 didn't work for me.

edouard-lopez/How-to-flash-and-root-OnePlus-3T-on-Linux.md

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