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Hello,
I just received my OP6 and I followed the guide on XDA to unlock, modify the recovery in TWRP, root and install a custom ROM. On my old tel, I used to do it but then I had to do a wrong manipulation.
Tutorial I followed: https://forum.xda-developers.com/oneplus-6/how-to/oneplus-6-unlock-bootloader-flash-twrp-t3792643
What I have done :
1- Unlock via adb.exe
2- flash twrp-3.2.3-0-enchilada.img from adb.exe
3- Flash twrp-3.2.3-0-enchilada.ZIP
4- Flash Magisk-v17.2.zip
The phone was booting well and still on Oxygen OS
So I rebooted in TWRP to flash the ROM HAVOC custom (https://forum.xda-developers.com/oneplus-6/development/rom-havoc-os-t3817805)
1- Wipe DATA, Davik, system
2- Flash the ROM.ZIP
3- reboot in TWRP
4- Flash Gapps => Error 20 with Gapps ARM64 and error 70 with Gapps ARM
5- Reboot system => Message : No OS Installed! Are you sure you wish to reboot ?
And when I reboot system, it comes back on the icon TWRP! Impossible to start on the ROM, it brings me back to the icon of recovery! I do not have enough on the menu. To have access again to the TWRP menu, I have to reflash twrp-3.2.3-0-enchilada.img ....
Do you have an idea to get back to normal where to install TWRP + Custom ROM?
Thank you.
PS: sorry i used google traduction.
I Solved my problem. I returned to stock but i always can't flash custom ROM. I blocked to TWRP icon after reboot.
vidéo : https://www.youtube.com/watch?v=jtc7EhNsfPA
Tools : https://forum.xda-developers.com/oneplus-6/how-to/tool-msmdownloadtool-v4-0-international-t3798892
I am creating this post to help p2 community who is stuck on blue led after magisk update on custom rom
I have encountered this issue twice on my phone after a magisk update.
This happens when you patch the update directly from magisk manager.
The first time I was stuck with this issue on custom pie rom, I searched on other threads and got to know that device needs to reset to stock rom by flashing fast boot stock files on download mode, just search it, you will get link with details
However, this was a very complex task , also I lost my data in the process after flashing the data partition. From there , I went on to flash custom rom ,then installed apps , the process took the whole day
The second time when I again stuck with blue led , I was on another pie rom, This time I recovered my device without having to go over flashing all things again.
Please find the detailed step below , as I think it may help someone in such critical issues
1) Go to download mode, flash treble supported twrp for treble supported pie roms, by using command - fastboot flash recovery name.img
2) Temporary boot into same twrp , command is -
fastboot boot name.img
3) Once in twrp, go to reboot, reboot to recovery
4) Once in recovery , copy following files into internal storage - magisk.zip, magiskunistaller.zip, twrprecovery.img ( one used in step 1 ), boot.img ( extract it from existing rom package.zip)
5) Flash magisk uninstaller first
6) Go to install, install image
flash boot.img by selecting boot partition
if it get stuck , again go in twrp using step 3 and try again, it will work
flash twrprecovery.img by selecting recovery partition
7) Flash magisk zip now
8) If all goes well , you phone will boot into existing rom
Please like the post if you had same issue and are able to recover it from mentioned steps
I got into this trouble too, when direct installing magisk from v19.2 to v19.3. The magisk manager shows that it's finished installing v19.3 and reboot. Then the phone shows the white Lenovo screen, then turns dark, and vibrate for a few seconds with blue led lighting up, and finally just freeze. No bootloop, just a dark screen with blue notification led.
What I did was going to twrp (the one recommended in LOS 16.0 thread) by pressing vol up + down + power button until the white Lenovo screen come up, then release. I just reflash my current ROM (RR-P-v7.0.2-20190604-kuntao-Official.zip) using adb sideload. It finished flashing, click reboot, and finally managed to boot into system. No data loss, magisk v19.3 worked, and no magisk uninstaller required.
During the flashing process, I noticed that Magisk v19.3 was being auto flashed, so the magisk manager direct install probably somehow mess up with the boot.img after installing v19.3.
I was not able to go in twrp by any means , so I mentioned steps via download mode
Regarding your way to sideload and dirty flash whole rom , it didnt worked with me previously, so I cannot say about that, it was going back to blue led after reflashing
Regarding magisk installing and removing steps, anyone can ignore this steps and try if it works for them.
Just uninstall the magisk and reinstall it.
I have also faced same error previously and reinstalled magisk and it worked.
Someone please make a video of this and post it here
Rakxx said:
1) Go to download mode, flash treble supported twrp for treble supported pie roms, by using command - fastboot flash recovery name.img
2) Temporary boot into same twrp , command is -
fastboot boot name.img
3) Once in twrp, go to reboot, reboot to recovery
4) Once in recovery , copy following files into internal storage - magisk.zip, magiskunistaller.zip, twrprecovery.img ( one used in step 1 ), boot.img ( extract it from existing rom package.zip)
5) Flash magisk uninstaller first
6) Go to install, install image
flash boot.img by selecting boot partition
if it get stuck , again go in twrp using step 3 and try again, it will work
flash twrprecovery.img by selecting recovery partition
7) Flash magisk zip now
8) If all goes well , you phone will boot into existing rom
I have this issue but I don't know how to do these steps please make a YouTube video and post a link here (I'm new to this)
Click to expand...
Click to collapse
EDIT: After a few reboots, TWRP stopped working.. now if I try to enter recovery, I get into fastboot instead. But I can still boot the system fine and I still have Magisk. Sorry.. looks like TWRP on this version is still a no-go for now..
I leave the guide here to keep the discussion open, though.. and after the steps some more info on what exactly worked for me..
Hi all, the following steps worked for me (not really, see edit above), but as usual please proceed at your own risk, backup everything before, and be prepared to reinstall everything from scratch if something goes wrong. I am not responsible of anything that happens to your devices when following this guide.
Prerequisites:
- OnePlus 6 (might work also for 6t, but it's untested)
- Oxygen OS 9 open beta 25 (Might work also with the stable version, but again, untested)
- Enable the "advanced reboot" option in developer options.
- latest blu_spark TWRP installed (3.3.1 v9.101)
- if you have Magisk, make sure it's version 20.0 or later (previous versions don't support Android 10)
- if you have Magisk modules, it's highly recommended to disable or uninstall them before proceeding, as some of them might not be compatible with Android 10 and eventually cause a bootloop.
- A computer that is able to run fastboot commands and that you can connect your phone to.
Now, the steps:
- Reboot into TWRP, open the "reboot" menu and take a note of your current active slot (can be a or b)
- Go back to Oxygen OS and install Android 10 open beta 1 through system updates. At the end of the installation, DO NOT PRESS "REBOOT".
- Press the power button and from the advanced reboot menu, reboot into bootloader.
- Connect the phone to the pc.
- If your active slot, noted in the first step, was "a", type "fastboot --set-active=a" . If it was "b", use the same command but replace the final letter with "b".
- On the phone, use the volume buttons to select "recovery mode", and press the power button to confirm.
- You should now be into TWRP: install TWRP again using its installation zip file, DO NOT REBOOT.
- Go to the reboot menu, and change the active slot to the other one (depending on your currently active one).
- Still in TWRP, reboot to recovery.. you should land in TWRP again.
- If you had Magisk, or if you want it, flash it.
- Reboot to system.
If everything goes well, you should now be on Oxygen OS 10 open beta 1, with TWRP installed!
Note: the current version of TWRP does not support flashing the new OnePlus open betas, so when a new open beta is released and you want to update, you will have to go through this process again (until a new compatible TWRP is released).
EDIT 2: Just to give some more information in case someone else wants to try, here's what I did AFTER the steps below:
- Rebooted into OOS open beta 1, just to check that it was booting.. worked.
- Rebooted into TWRP and did a complete wipe, including the internal storage (I wanted a clean install of OB1)
- Rebooted into OOS and did the phone setup (Google account, ecc) including setting up a lockscreen pattern, but no figerprints yet.
- Rebooted again into TWRP to install Magisk, and everything worked, TWRP also asked for my pattern and decrypted data correctly
- After that I didn't reboot anymore for a while, and completed the setup with apps, fingerprints, etc.. and also installed a magisk module (quickswitch), but without using recovery.
- The next time I tried to reboot into recovery, I wasn't able anymore.. I was getting into fastboot instead, but the system can still boot just fine.
cc_rock said:
Hi all, the following steps worked for me, but as usual please proceed at your own risk, backup everything before, and be prepared to reinstall everything from scratch if something goes wrong. I am not responsible of anything that happens to your devices when following this guide.
Prerequisites:
- OnePlus 6 (might work also for 6t, but it's untested)
- Oxygen OS 9 open beta 25 (Might work also with the stable version, but again, untested)
- Enable the "advanced reboot" option in developer options.
- latest blu_spark TWRP installed (3.3.1 v9.101)
- if you have Magisk, make sure it's version 20.0 or later (previous versions don't support Android 10)
- if you have Magisk modules, it's highly recommended to disable or uninstall them before proceeding, as some of them might not be compatible with Android 10 and eventually cause a bootloop.
- A computer that is able to run fastboot commands and that you can connect your phone to.
Now, the steps:
- Reboot into TWRP, open the "reboot" menu and take a note of your current active slot (can be a or b)
- Go back to Oxygen OS and install Android 10 open beta 1 through system updates. At the end of the installation, DO NOT PRESS "REBOOT".
- Press the power button and from the advanced reboot menu, reboot into bootloader.
- Connect the phone to the pc.
- If your active slot, noted in the first step, was "a", type "fastboot --set-active=a" . If it was "b", use the same command but replace the final letter with "b".
- On the phone, use the volume buttons to select "recovery mode", and press the power button to confirm.
- You should now be into TWRP: install TWRP again using its installation zip file, DO NOT REBOOT.
- Go to the reboot menu, and change the active slot to the other one (depending on your currently active one).
- Still in TWRP, reboot to recovery.. you should land in TWRP again.
- If you had Magisk, or if you want it, flash it.
- Reboot to system.
If everything goes well, you should now be on Oxygen OS 10 open beta 1, with TWRP installed!
Note: the current version of TWRP does not support flashing the new OnePlus open betas, so when a new open beta is released and you want to update, you will have to go through this process again (until a new compatible TWRP is released).
Click to expand...
Click to collapse
Anyone tried?
This sounds plausible. Nice!
Question though, how much working functionality remains? Can TWRP be used to install zips, clear cache, do factory reset, install magisk stuff, etc..? Are these still compatible with android 10? Have you tried to do something with it?
kyljys said:
This sounds plausible. Nice!
Question though, how much working functionality remains? Can TWRP be used to install zips, clear cache, do factory reset, install magisk stuff, etc..? Are these still compatible with android 10? Have you tried to do something with it?
Click to expand...
Click to collapse
Hi, first of all, see the edit above.. looks like my TWRP stopped working now.. but it was working for a while.
Initially I was able to flash TWRP itself, and then flash Magisk (which still works) .. not sure exactly when TWRP stopped working.
I bet it stopped working after magisk install. It does the same fir the stock recovery also. No recovery, goes to bootloader.
Oh.. So that means we either have twrp and no root... Or root and no recovery... Choose whatever one wants... Hehe.. Thnx op for the efforts though
cc_rock said:
Hi, first of all, see the edit above.. looks like my TWRP stopped working now.. but it was working for a while.
Initially I was able to flash TWRP itself, and then flash Magisk (which still works) .. not sure exactly when TWRP stopped working.
Click to expand...
Click to collapse
One thing to try would be installing magisk 19.4 from twrp. In canary thread there's a discussion on this very problem with other oneplus devices with A10 and magisk 20.1 that the recovery disappears. Magisk 19.4 did have some fixes regarding Android 10, maybe worth a shot?
Though we could wait the next version of magisk as this problem seems to be under investigation.
I'm able to to keep twrp with magisk 19.3
[email protected] said:
I'm able to to keep twrp with magisk 19.3
Click to expand...
Click to collapse
Ive also managed to do this after a fair bit of fiddling. A quick guide below as im off to bed.
1) you need to be rooted
2) Flash twrp installer in magisk manager (twrp-3.3.1-x_blu_spark_v9.101_op6.zip)
3) reboot to bootloader
3) fastboot flash boot boothybridbeta2.img ( https://drive.google.com/open?id=1JCltKatjRUk1XdEibAme8MnDJxMkzhwE ) boot image is from [ROM][PORT][10.0.0] OnePlus7 Open Beta 3 Port for OnePlus 6 [12.10.19]
4) fastboot reboot
5) reboot to recovery via adb
6) run magisk uninstaller.zip
7) flash stock boot.img in twrp
8) flash twrp installer.zip
9) reboot recovery (to see if it works)
10) reboot phone and choose boot to recovery from phone system again to test it works
11) install magisk v19.3 installer zip in twrp
12) reboot
tl;dr
TWRP doesn't encrypt/mount storage,
Magisk kills WiFi.
Before I bricked the phone with a Magisk module, everything was working.
Had to revive my phone with MSM, stuck in qualcomm crashdump.
Now stock firmware is working, but I cannot get phone rooted with working WiFi / working TWRP.
==================================================
This is how I did it before (clean install, unlocked OEM)
1. boot into fastboot/bootloader
2. fastboot > fastboot flash boot twrp-3.3.1-70-guacamole-unified-Q-mauronofrio.img
3. boot into recovery mode
4. install OnePlus7ProOxygen_21.E.21_OTA_021_all_1910071445_89e89c225a754eb6.zip
5. install twrp-installer-3.3.1-4-guacamole.zip
6. reboot into recovery
7. Install Magisk-v20.0.zip
8. reboot system
DONE and it worked.
NOW:
1-6 stay the same.
But when I get back into recovery, TWRP doesn't read/mount the storage.
adb push magisk to sdcard/ and try to install leads to following:
Updating partition details...
...done
Unable to mount storage
Failed to mount "/data" (Invalid argument)
Full SELinux is present.
Unable to mount /data/media/TWRP/.twrps
MTP Enabled
- blablabla
- installing
- Done
Updating partition details...
...done
Unable to mount storage
Click to expand...
Click to collapse
...guess what, Magisk is not installed/working
- Repair/change file system doesn't work.
(phone will boot into system instead of recovery, back to recovery still Internal Storage at 0 MB)
- formatting data + Wiping Dalvic / ART Cache, System, Cache doesn't work
(will all lead to stuck in Fastboot -> recovery due to fastboot image)
(installing boot.img (on A & B) and TWRP.zip doesn't help)
- install OOS and then just flash TWRP without flashing stock firmware doesn't change
Alternative
1-6 stay the same.
7. boot into fastboot
8. boot TWRP *-70 again
9. encrypting now works, mounted
10. isntall MAGISK (20.0 or 20.1)
11. reboot system
At this point it seems like everything is working, but with MAGISK now installed, WIFI won't work. Can't activate WiFi it at all.
So, i have no idea what I changed.
Rooting worked before the brick. Now it stopped working.
My friend has that problem after rooting his phone with magisk..
Just flaah the rom and wifi will be back..
HOW TO FLASH
This version is only for not branded devices
Download the zip;
Unpack the zip in a folder;
Reboot the OnePlus 7 Pro in fastboot mode (Power and volume + and volume-);
Connect the OnePlus 7 Pro to PC;
Run flash-all.bat flasher you need;
Wait until the process end;
The phone will automatically reboot.
https://forum.xda-developers.com/on...ock-fastboot-roms-oneplus-7-pro-t3931424/amp/
Click to expand...
Click to collapse
Thank you, Sir
I should have mentioned that I already flashed a dozen times to stock firmware. Used the package from your link as well when I was stuck in fastboot.
My mistake, I should have been more accurate with my problem.
Getting it back to stock firmware isn't the problem.
Getting it back as a rooted device with working WiFi and working TWRP is the problem.
Stock OOS - without TWRP, without Magisk » ROM working
Stock OOS + TWRP (3.3.1-4) » TWRP not working; ROM working (but this combo worked before)
Stocks OOS + TWRP (3.3.1-70) » TWRP working, ROM working[/b] (but TWRP *-70 should be replaced by *-4 afaik[/U]; correct me if I am wrong)
Stock OOS + Magisk + TWRP *-70/TWRP*-4 » Magisk working, ROM no WiFi. (fixable through reflashing stock firmware and deleting everything)
So maybe any ideas why Magisk/TWRP stopped working now? And how I can get my OP7P rooted and the stable TWRP working?
Solved
Reinstalling boot.img + TWRP 3.3.1-70 installer.zip + Magisk v20.1.zip did it this time
saexcore said:
Solved
Reinstalling boot.img + TWRP 3.3.1-70 installer.zip + Magisk v20.1.zip did it this time
Click to expand...
Click to collapse
Hey, can you go into more details? I'm having the same trouble of not being able to install magisk (stock rom with twrp installed).
Where can I get this boot.img? And what's the exact process to installing it? Thanks.
For me, I never booted into bootloader. I ran fastboot boot /path/to/TWRP.img, while still booted up and that took me to recovery and I used TWRP installer and flashed magisk from there.
I tried almost all the other methods, and kept soft bricking. I didn't patch anything, booting from fastboot soft bricked me.
I just started experiencing connection issues after installing a Magisk modules, but I read a custom kernel solves that.
meleeb4kr said:
Hey, can you go into more details? I'm having the same trouble of not being able to install magisk (stock rom with twrp installed).
Where can I get this boot.img? And what's the exact process to installing it? Thanks.
Click to expand...
Click to collapse
Sure.
The boot image I got from:
https://androidfilehost.com/?w=files&flid=294300
(download the fastboot firmware for your device, for me it was "10.0.1-GM21BA".
open the archive, open the next folder, extract the "boot.img" file to your PC)
Magisk I got from:
https://github.com/topjohnwu/Magisk/releases
(I used 20.1, 19.4/20.0 seems to work more stable for more people)
TWRP I got from:
https://forum.xda-developers.com/on...nt/recovery-unofficial-twrp-recovery-t3931322
(Download image for Q and twrp-installer.zip)
===================================
1. Boot into fastboot
(developer options > advanced restart > restart bootloader or power device off > HOLD volume down and press power till in fastboot)
2. In fastboot: "fastboot boot twrp70.img"
(#protip: drag & drop file into CMD)
2.1. wait till phone encrypted everything and TWRP started
3. Copy twrp70.zip, boot.img & Magisk-v20.1.zip to your phone
(I put it in the TWRP folder)
no reboots in-between!
3. In twrp homescreen: install > install image > boot.img > choose "boot" > install
4. In twrp homescreen: install > install zip > twrp70.zip > install
4.1 wipe dalvik
5. In twrp homescreen: install > install zip > magisk-v20.1.zip > install
5.1 wipe dalvik
6. In twrp homescreen: reboot > system
Done.
Hope it works for you too.
Hello!
I'm having quite a hard time figuring out what is happening on my new Oneplus 6.
The first time i flashed LineageOS 16 microg edition it booted but since i tried to restore stock ROM backup with TWRP it all went to hell.
Device immediately bricked, only booting to fastboot.
Had to use msm tool to unbrick. ( the first of so many times.... )
Then updated from settings to latest OOS 9.0.9.
unnlocked bootloader
and flashed again.
NO OS INSTALLED.
phone boots only in fastboot.
can't boot any recovery from fastboot. gives error.
if reboot to recovery blue led and black screen is all that i see.
only fix is msm.
From that point onwards i tried EVERY guide I could find (and recognize as valid of interest) here on xda, youtube, google.
Multiple times per guide.
here's an example of a "last resort" guide from https://forum.xda-developers.com/oneplus-6/how-to/guide-microg-oneplus-6-source-ligthway-t3874469
INSTALLATION TUTORIAL
Italic = recommended, but not mandatory. Do it if something doesn't work properly
0) DON'T RESTORE your apps until everything is set up, otherwise you'll have issues with GCM (getting instant notifications from messaging apps for example)
1) Reboot to blu spark TWRP
2) step deleted
3) Flash OOS
4) Flash TWRP
5) Reboot to recovery
6) Flash OOS
7) Flash TWRP
8) Reboot to recovery
9) Flash your custom ROM + TWRP + reboot to TWRP
10) Flash again your custom ROM + TWRP
11) Reboot to recovery
11 bis) Wipe data ("factory reset")
12) Flash Magisk
13) Reboot to system. It's just to make sure the installation worked.
... more on link
Click to expand...
Click to collapse
Tried also official lineage, SyberiaOS. Different previous version of the two (since I read in the lineage official thread others have this issue)
Basically at the point after flashing any of these roms results immediately in TWRP warning "no os is installed" at reboot attempt with or without re-flashing twrp after.
Then if rebooted just hangs on blue led. can't boot anything.
Meanwhile flashing OTAs + twrp results in bootable system.
Other things that i tried:
before unlocking BL update to latest OTA_34 -> 9.0.9, reboot, install again.
using mauronofrio twrp version https://forum.xda-developers.com/on...overy-unofficial-twrp-touch-recovery-t3860815
Any ideas?
[SOLUTION]
If you're bricked follow this: https://forum.xda-developers.com/oneplus-6/how-to/tool-msmdownloadtool-v4-0-international-t3798892
1 - Have last OOS installed in both slots
- update from settings, local update, latest OTA (Pie) from oneplus support site.- reboot, let it complete- apply again2 - Enable OEM Unlock in Developer options
3 - Boot to Fastboot and unlock bootloader:
Code:
fastboot oem unlock
4 - Once in OOS reboot to fastboot and boot twrp:
Code:
fastboot boot <twrp-img-name>.img
5 - Push twrp + custom rom:
Code:
adb push <custom-rom-name>.zip <twrp-zip-name>.zip /sdcard
6 - Flash twrp in twrp
7 - Reboot to recovery
8 - Wipe system and Data
9 - flash ROM
10 - flash twrp
[IMPORTANT]
11 - Tap Reboot to recovery then if it says No OS installed! tap home button! Don't reboot! reboot = brick = msmdownloadtool
12 - Go in advanced menu and select Fix Recovery Bootloop and swipe
13 - THEN TRY TO MOUNT /system.
IF YOU'RE UNABLE TO MOUNT /system APPLY AGAIN THE FIX AND REPEAT FROM STEP 714 - Reboot to recovery
It WILL stil say No OS installed but now you'll be able to reboot to recovery[/IMPORTANT]
15 - Once in recovery reboot to system.
If you've done everything correctly it won't complain again about no OS being installed and you'll get your rom up and running.16 - Let it reboot to system and complete first configuration
17 - Now you can reboot and flash every module you like from twrp.
That's it. Hope this'll spare nightmares and storage write life.
This is a bad phone .. I have it too
تم الإرسال من ONEPLUS A6003 باستخدام Tapatalk
But you seem (from post history) to be able to install ROMs :crying:
As most of those who try i guess.
Maybe my phone is somehow damaged
What some guides miss out is that you have to install everything twice. Once on slot A and once on slot B and after each install, verify what slot you are on before reboot and then check what slot you are on after reboot. I ran into issues flashing Havoc OS onto my phone too and figured it out in the end after so many times that I was in fact installing stuff twice on the same slot because it never switched over. I'll run you through the order I did things so hopefully you can follow.
-Use MSM Tool to revert everything back to stock and once the phone is booted, update to 9.0.9 either by downloading the update through the phone or by local upgrade if you have the file to hand. (remember to only have the OOS file present as any other OS in zip form crashes the local updater). You don't need to do this if you are already rocking stock Oxygen OS.
-Once the phone has restarted after the upgrade, let the post update procedure finish before continuing.
-Enter developer mode and enable OEM unlocking, Advanced Restart and USB Debugging. From here, reboot to bootloader.
-Plug your phone into the PC now and assuming you have fastboot setup ready on your PC, type 'fastboot oem unlock' and use the volume keys to select the option to unlock and press the power button to select.
-After the phone has completed it's wipe cycle, re-enable Advanced Restart and USB Debugging. The OEM unlock option should be greyed out as it's already been enabled. Make sure you don't add a pin code or password just yet as you will enable encryption which will make the next steps harder than it should be.
-Boot back to bootloader and type 'fastboot boot twrp.img' (or whatever you named it. Make sure that the image file is in the same folder you initiated cmd or powershell)
-Once booted into TWRP, flash blu_spark TWRP as that supports encryption apparently and is more stable than any other. To make sure that the script executed on both slots, hit reboot and check what slot you are on and tap the button for the other slot. Now reboot back to recovery, check you are on the other slot and flash it again.
-Now flash your 9.0.9 OOS zip followed by TWRP once on slot A and once on slot B while making sure you are on the other slot when doing it a second time. Remember that you have to re-flash TWRP after any flashable file that alters the boot partition before you reboot or you will undo all your work. Just make it habit that you re-flash it every time and you should be good.
-Once OOS and TWRP have been flashed on BOTH slots, reboot back to recovery and do the whole process again with your custom ROM (Remembering to flash TWRP before you reboot and checking which slot you are one before and after each flash).
-Once that has completed, reboot back to recovery and flash Magisk on each slot and GApps or MicroG if your ROM supports it. You don't need to re-flash TWRP after this but I do anyway to keep the habit lol.
-Entirely up to you, but before you reboot to your fresh new OS, you can wipe internal storage ONLY if you want all traces of your previous OS gone, but this will also remove personal files etc. I generally just head into TWRP file manager and delete the Android folder and keep the rest.
If you run into issues like crashes on your new OS, reboot to recovery and do a factory reset, but you will also need to re-flash Magisk again. GApps installs itself to system, so you won't need to re-flash that. MicroG does not and will need setting up again. One thing that took me a while to realise is that if you try rebooting while your USB is plugged into your PC, you will sometimes enter download mode, so only keep it plugged in when you need it for MSM Tool or to transfer files across.
I'm pretty sure I put everything down the way I did it and didn't miss anything, but it is late and I am half asleep. Will check back in the morning and double check with a fresh brain.
Many thanks for your exhaustive reply!
Will follow this tomorrow morning with a fresh brain
Fixed!
Now I'll write a guide for those in the same situation.
franticboe said:
Hello!
I'm having quite a hard time figuring out what is happening on my new Oneplus 6.
The first time i flashed LineageOS 16 microg edition it booted but since i tried to restore stock ROM backup with TWRP it all went to hell.
Device immediately bricked, only booting to fastboot.
Had to use msm tool to unbrick. ( the first of so many times.... )
Then updated from settings to latest OOS 9.0.9.
unnlocked bootloader
and flashed again.
NO OS INSTALLED.
phone boots only in fastboot.
can't boot any recovery from fastboot. gives error.
if reboot to recovery blue led and black screen is all that i see.
only fix is msm.
From that point onwards i tried EVERY guide I could find (and recognize as valid of interest) here on xda, youtube, google.
Multiple times per guide.
here's an example of a "last resort" guide from https://forum.xda-developers.com/oneplus-6/how-to/guide-microg-oneplus-6-source-ligthway-t3874469
Tried also official lineage, SyberiaOS. Different previous version of the two (since I read in the lineage official thread others have this issue)
Basically at the point after flashing any of these roms results immediately in TWRP warning "no os is installed" at reboot attempt with or without re-flashing twrp after.
Then if rebooted just hangs on blue led. can't boot anything.
Meanwhile flashing OTAs + twrp results in bootable system.
Other things that i tried:
before unlocking BL update to latest OTA_34 -> 9.0.9, reboot, install again.
using mauronofrio twrp version https://forum.xda-developers.com/on...overy-unofficial-twrp-touch-recovery-t3860815
Any ideas?
[SOLUTION]
If you're bricked follow this: https://forum.xda-developers.com/oneplus-6/how-to/tool-msmdownloadtool-v4-0-international-t3798892
1 - Have last OOS installed in both slots
- update from settings, local update, latest OTA (Pie) from oneplus support site.- reboot, let it complete- apply again2 - Enable OEM Unlock in Developer options
3 - Boot to Fastboot and unlock bootloader:
Code:
fastboot oem unlock
4 - Once in OOS reboot to fastboot and boot twrp:
Code:
fastboot boot <twrp-img-name>.img
5 - Push twrp + custom rom:
Code:
adb push <custom-rom-name>.zip <twrp-zip-name>.zip /sdcard
6 - Flash twrp in twrp
7 - Reboot to recovery
8 - Wipe system and Data
9 - flash ROM
10 - flash twrp
[IMPORTANT]
11 - Tap Reboot to recovery then if it says No OS installed! tap home button! Don't reboot! reboot = brick = msmdownloadtool
12 - Go in advanced menu and select Fix Recovery Bootloop and swipe
13 - THEN TRY TO MOUNT /system.
IF YOU'RE UNABLE TO MOUNT /system APPLY AGAIN THE FIX AND REPEAT FROM STEP 714 - Reboot to recovery
It WILL stil say No OS installed but now you'll be able to reboot to recovery[/IMPORTANT]
15 - Once in recovery reboot to system.
If you've done everything correctly it won't complain again about no OS being installed and you'll get your rom up and running.16 - Let it reboot to system and complete first configuration
17 - Now you can reboot and flash every module you like from twrp.
That's it. Hope this'll spare nightmares and storage write life.
Click to expand...
Click to collapse
i tried all the mentioned steps, nothing worked for me. Even i tried all the guides, here on xda and on youtube i am not able to boot my 1+6 it is getting booted to fastboot mode, after installing custom rom. But if i flash only OOS then it boots back properly.
But in case of a custom rom it boots back to fastboot mode, and then in the end msm tool is the last resort to lock bootloader and make it stock.
i tried all the mentioned steps, nothing worked for me. Even i tried all the guides, here on xda and on youtube i am not able to boot my 1+6 it is getting booted to fastboot mode, after installing custom rom. But if i flash only OOS then it boots back properly.
But in case of a custom rom it boots back to fastboot mode, and then in the end msm tool is the last resort to lock bootloader and make it stock.
Click to expand...
Click to collapse
If you are stuck on fastboot try
fastboot set_active other
then try rebooting recovery if fails try
fastboot boot pc-stored-twrp
I found changing the active slot via fastboot may unbrick it without msm. It all depends on what steps you actually take during installation.
For installing LOS try not flashing twrp after installation. Los comes with its own recovery. Anyway if it says no OS installed you HAVE to fix recovery bootloop.