Database Info

Need help flashing OOS 5.1.8 zip (via twrp!?) bear with me.

New OP6 owner, quite bugged with how this thing works when flashing stuff..
it was a breeze on my 6p, anyways.
i decided to do a "Clean" flash and wiped data/system/dalvik etc.
then tried to flash the Full zip of 5.1.8 (it is a 1.2gb file) and i flashed via TWRP then flashed twrp zip and rebooted recovery/flashed magisk.
but there is no OS installed it says, boots me back into twrp.
my question now is how do i get it back to load up OOS, do i have to use fastboot now .. ?
i dont want it to wipe my whole SD
what do i do, and how do i stop this from happening for next time?
i thought flashing was normal that way, are we not supposed to wipe system with the op phones..?
i had a MOD installed (xXx) and wanted it removed so that i could install another mod ,thus i wiped system/data etc.
please let me know how to fix this, thx !

leondestiny said:
New OP6 owner, quite bugged with how this thing works when flashing stuff..
it was a breeze on my 6p, anyways.
i decided to do a "Clean" flash and wiped data/system/dalvik etc.
then tried to flash the Full zip of 5.1.8 (it is a 1.2gb file) and i flashed via TWRP then flashed twrp zip and rebooted recovery/flashed magisk.
but there is no OS installed it says, boots me back into twrp.
my question now is how do i get it back to load up OOS, do i have to use fastboot now .. ?
i dont want it to wipe my whole SD
what do i do, and how do i stop this from happening for next time?
i thought flashing was normal that way, are we not supposed to wipe system with the op phones..?
i had a MOD installed (xXx) and wanted it removed so that i could install another mod ,thus i wiped system/data etc.
please let me know how to fix this, thx !
Click to expand...
Click to collapse
You need to make sure you are booting the slot you flashed the rom on, A or B.

sting5566 said:
You need to make sure you are booting the slot you flashed the rom on, A or B.
Click to expand...
Click to collapse
how do i do this? i only flashed zip from the root of my SD , there was no option to select either A or B :C
i went into advanced or seomthing and saw SLot a and B i tapped a and reboot sytem now it is stuck on twrp logo.
f** this ab ****.

When u flashed the rom and rebooted it should let u know which one u r flashing on when u flash magisk, the xXx should have been a magisk module so should have been deleted when u wiped data, I would re-download 5.1.8
Wipe all again.
Flash OS
Flash twrp installer
Reboot to twrp
Flash magisk and reboot
---------- Post added at 01:23 PM ---------- Previous post was at 01:22 PM ----------
Did u have the magisk module version of xXx, if so all u had to do was uncheck it and reboot

OnePlus 6 has two partitions like the Pixel 2. For seamless OTA updates. In TWRP go to the Reboot menu and you'll see your currently active slot. It's either A or B. Switch to the other one and reboot. That should do it if you did flash the ROM.

Bradl79 said:
When u flashed the rom and rebooted it should let u know which one u r flashing on when u flash magisk, the xXx should have been a magisk module so should have been deleted when u wiped data, I would re-download 5.1.8
Wipe all again.
Flash OS
Flash twrp installer
Reboot to twrp
Flash magisk and reboot
---------- Post added at 01:23 PM ---------- Previous post was at 01:22 PM ----------
Did u have the magisk module version of xXx, if so all u had to do was uncheck it and reboot
Click to expand...
Click to collapse
man screw this ab partition shet, i will be forced to do a userdata reset..
can you please advise me what not to do to get into this mess again..?
its not fun recopying my data back and forth.
all i tried to do was clean flash and flash the latest rom via twrp..
why does this thing has to be so complex, please tell me if a clean wipe does this mess ?
cant we safely clean wipe this thing or what?
i love the phone, but the flashing stuff is a huge mess imo.

leondestiny said:
man screw this ab partition shet, i will be forced to do a userdata reset..
can you please advise me what not to do to get into this mess again..?
its not fun recopying my data back and forth.
all i tried to do was clean flash and flash the latest rom via twrp..
why does this thing has to be so complex, please tell me if a clean wipe does this mess ?
cant we safely clean wipe this thing or what?
i love the phone, but the flashing stuff is a huge mess imo.
Click to expand...
Click to collapse
You can always just keep a backup of userdata in TWRP but you don't have to wipe data. If you wipe system and flash the full zip, you will get the no os error but you can boot to system anyway. It just thinks there is no os. The bootloop to TWRP is probably related to magisk.

mikex8593 said:
You can always just keep a backup of userdata in TWRP but you don't have to wipe data. If you wipe system and flash the full zip, you will get the no os error but you can boot to system anyway. It just thinks there is no os. The bootloop to TWRP is probably related to magisk.
Click to expand...
Click to collapse
took me an hour or so to get this thing booting up again..
without the need to wipe SD , this is so strange.
i honestly have no idea how i did it, but i am afraid to use twrp now..
this thing is messed up

leondestiny said:
took me an hour or so to get this thing booting up again..
without the need to wipe SD , this is so strange.
i honestly have no idea how i did it, but i am afraid to use twrp now..
this thing is messed up
Click to expand...
Click to collapse
It's relatively easy. Just always remember to flash TWRP and magisk after flashing full ROM zip. It's always a safe bet to erase your lock screen before messing with TWRP as well so it can just decrypt with no password. If you use a magisk ROM, it's all systemless so the only changes that would stay are the ones that would debloat apps or remove system files. Everything would revert back to normal after you uncheck the ROM module in magisk manager.

mikex8593 said:
It's relatively easy. Just always remember to flash TWRP and magisk after flashing full ROM zip. It's always a safe bet to erase your lock screen before messing with TWRP as well so it can just decrypt with no password. If you use a magisk ROM, it's all systemless so the only changes that would stay are the ones that would debloat apps or remove system files. Everything would revert back to normal after you uncheck the ROM module in magisk manager.
Click to expand...
Click to collapse
hmm okay thx, someone suggested me omni rom, but i will need to erase data right?
but my issue is, if in case i wanted to go back to OOS, would i need to erase data again? :l
and also about flashing roms, must they be flashed on both slots..? a and b ?
i have no clue how i got OOS back booting to be honest.. :l

leondestiny said:
hmm okay thx, someone suggested me omni rom, but i will need to erase data right?
but my issue is, if in case i wanted to go back to OOS, would i need to erase data again? :l
and also about flashing roms, must they be flashed on both slots..? a and b ?
i have no clue how i got OOS back booting to be honest.. :l
Click to expand...
Click to collapse
Switching ROMs, it is best to erase data or keep separate data backups for each ROM and restore the associated ones. As far as flashing on both slots, it wouldn't hurt, but it's not necessary unless instructions dictate. The whole reason for the slots is to allow seamless updates while the os is still active. If you experience any issues with bugs that aren't stated to be in the ROM thread, a clean install is always recommended.

mikex8593 said:
Switching ROMs, it is best to erase data or keep separate data backups for each ROM and restore the associated ones. As far as flashing on both slots, it wouldn't hurt, but it's not necessary unless instructions dictate. The whole reason for the slots is to allow seamless updates while the os is still active. If you experience any issues with bugs that aren't stated to be in the ROM thread, a clean install is always recommended.
Click to expand...
Click to collapse
thx mate, so for next time if i were to flash some oos through twrp, i only need to wipe data/cache etc.
then flash the oos zip ? i dont think i had the option to select which Slot to flash it to, so i guess i just have to reboot to the slot that it has it flashed on..?
and also flashing procedure must be like Rom then twrp then reboot twrp then flash magisk yes?

leondestiny said:
took me an hour or so to get this thing booting up again..
without the need to wipe SD , this is so strange.
i honestly have no idea how i did it, but i am afraid to use twrp now..
this thing is messed up
Click to expand...
Click to collapse
No sheet
This is what happened to me LOL and I soft bricked phone. Never ever bricked a phone before.
I tried to flash havoc os, OOS was originally on both A and B.
This process wiped slot B clean (even tho was booting on slot A), and OOS stayed on slot A.
I went to the reboot screen to reboot recovery on slot B and BAM I was bricked locked into fastboot mode.
And people say its easy.
Now I am in msmdownloadtool, I have managed to get it connected, and I can start the recovery but it fails, so I think the phone may be proper bricked.
Anyone getting a oneplus6 I would say these phones seem to have a genuine risk of brick, all I did was try to boot of a slot which TWRP says had no OS and now I have this problem.
---------- Post added at 01:59 ---------- Previous post was at 01:25 ----------
mikex8593 said:
It's relatively easy. Just always remember to flash TWRP and magisk after flashing full ROM zip. It's always a safe bet to erase your lock screen before messing with TWRP as well so it can just decrypt with no password. If you use a magisk ROM, it's all systemless so the only changes that would stay are the ones that would debloat apps or remove system files. Everything would revert back to normal after you uncheck the ROM module in magisk manager.
Click to expand...
Click to collapse
Havoc OS requires Oxygen OOS in both slots.
So I need to somehow get this to work.
I can unbrick the phone now with msmdownloadtool.
After ubricked the bootloader is locked again so I have to start from scratch.
Unlock oem loader in OS
Unlock bootloader in fastboot
Copy zips to phone.
Boot into TWRP and install TWRP, it says it installs to both slots but B bricks phone.
At this point I have oxygen OOS installed via recovery tool on slot A, twrp installed.
If I try to boot in slot B, phone bricks, fastboot loop which doesnt allow you to boot back into twrp so cannot switch back to slot A without msmdownload tool.
So the question is after I have recovered the phone how do I get oxygen OOS onto slot B as well, given I Cannot boot from slot B?
The solution is probably easy to those who know how but seems it isnt documented.

chrcol said:
No sheet
This is what happened to me LOL and I soft bricked phone. Never ever bricked a phone before.
I tried to flash havoc os, OOS was originally on both A and B.
This process wiped slot B clean (even tho was booting on slot A), and OOS stayed on slot A.
I went to the reboot screen to reboot recovery on slot B and BAM I was bricked locked into fastboot mode.
And people say its easy.
Now I am in msmdownloadtool, I have managed to get it connected, and I can start the recovery but it fails, so I think the phone may be proper bricked.
Anyone getting a oneplus6 I would say these phones seem to have a genuine risk of brick, all I did was try to boot of a slot which TWRP says had no OS and now I have this problem.
---------- Post added at 01:59 ---------- Previous post was at 01:25 ----------
Havoc OS requires Oxygen OOS in both slots.
So I need to somehow get this to work.
I can unbrick the phone now with msmdownloadtool.
After ubricked the bootloader is locked again so I have to start from scratch.
Unlock oem loader in OS
Unlock bootloader in fastboot
Copy zips to phone.
Boot into TWRP and install TWRP, it says it installs to both slots but B bricks phone.
At this point I have oxygen OOS installed via recovery tool on slot A, twrp installed.
If I try to boot in slot B, phone bricks, fastboot loop which doesnt allow you to boot back into twrp so cannot switch back to slot A without msmdownload tool.
So the question is after I have recovered the phone how do I get oxygen OOS onto slot B as well, given I Cannot boot from slot B?
The solution is probably easy to those who know how but seems it isnt documented.
Click to expand...
Click to collapse
Fastboot boot recovery. Img
Flash oos full ROM zip
Flash recovery. Zip
Reboot recovery
Flash oos full ROM zip AGAIN
flash twrp. Zip AGAIN
Reboot recovery
Flash magisk if you want root.
Make sure your using the correct twrp aswell. I recommend bluespark v86

chrcol said:
And people say its easy.
Click to expand...
Click to collapse
it is not easy, i make backups of my whole phone every 2weeks because i am a flashaholic i see myself switching from aosp back to oos and vice versa (i love oos) i actually gave up on flashing roms some weeks ago tried to stick to oos only so that i wont be bothered with bricks for whatver reason (and not being forced to use msmtool) , it is frustrating.
you always have to make sure you are not flashing a rom that has an older security patch , e.g november build of oos if you flash aosp rom with october build you might brick, so the rom has to be either on november security patch or newer e.g december.
it is so confusing as you even have to use the latest twrp always or else you can mess it up again..
always make backups is my advice.

leondestiny said:
it is not easy, i make backups of my whole phone every 2weeks because i am a flashaholic i see myself switching from aosp back to oos and vice versa (i love oos) i actually gave up on flashing roms some weeks ago tried to stick to oos only so that i wont be bothered with bricks for whatver reason (and not being forced to use msmtool) , it is frustrating.
you always have to make sure you are not flashing a rom that has an older security patch , e.g november build of oos if you flash aosp rom with october build you might brick, so the rom has to be either on november security patch or newer e.g december.
it is so confusing as you even have to use the latest twrp always or else you can mess it up again..
always make backups is my advice.
Click to expand...
Click to collapse
If you're installing havoc os, make sure you're using latest bluespark TWRP first. Reboot recovery, flash oos, flash TWRP, reboot recovery, flash havoc gapps and magisk then reboot. The only difference in a/b partition is that there's a few extra steps in the flashing process. You don't have to flash to both slots to have havoc, but you also shouldn't be manually changing the slot in TWRP to try to boot a specific slot unless you know what you're doing.

How to perform a clean install?

How to do a clean install(no rom installed just recovery)? I want to format everything and flash my rom thru otg. Shud I wipe everything when I boot to recovery?

I think internal storage is the correct option then though it also removes all media on the device. Otherwise clear system, data, cache, bootloader, dalvik. Then install the rom from external source.

Should I flash from fastboot the recovery(twrp)? It might get wiped once the wipe everything.

I have same doubts....

Mord0rr said:
I have same doubts....
Click to expand...
Click to collapse
So do I... You necro'd a 8 month old thread...

I tried to go through few thereds however I was unable to find an answer.
I'm still on 5.11 oreo a d official TWRP. I would like to update to newest pie, however I would go for clean flash.
How should I do it?
I already backed up all app+ data using titanium.
Should I just go to TWRP
1. Factory default
2. Wipe all
3. Wipe system. Data, davlik and cache
4 flash latest pie and don't reboot
5 reboot to twrp
6 flash twrp
7 reboot to TWRP and flash magisk
It it right?
Thank you

netgar said:
I tried to go through few thereds however I was unable to find an answer.
I'm still on 5.11 oreo a d official TWRP. I would like to update to newest pie, however I would go for clean flash.
How should I do it?
I already backed up all app+ data using titanium.
Should I just go to TWRP
1. Factory default
2. Wipe all
3. Wipe system. Data, davlik and cache
4 flash latest pie and don't reboot
5 reboot to twrp
6 flash twrp
7 reboot to TWRP and flash magisk
It it right?
Thank you
Click to expand...
Click to collapse
Swap 5 and 6

Flashing this phone looks like sorcery....
Miss all days we could go to TWRP, erase all **** and then just flash rom. Period.
Now, doing this can even brick the dam phone.
It sucks!
EDIT*
Did Nuke 9.0.5 and install fresh 9.0.3.:angel:

Mord0rr said:
Flashing this phone looks like sorcery....
Miss all days we could go to TWRP, erase all **** and then just flash rom. Period.
Now, doing this can even brick the dam phone.
It sucks!
EDIT*
Did Nuke 9.0.5 and install fresh 9.0.3.:angel:
Click to expand...
Click to collapse
That also happened to me. I do not know how to go to another custom ROM from another custom ROM without going to MsmDownloadToolV4 to unbrick my device. Actually i did unbrick my device twice already because of trying various custom ROM.
Also, is there a way to just restore from recovery then flash another custom ROM. Then if we want to change custom ROM again we can just restore from recovery again then flash another custom ROM?
Please help us guys. Thanks.

[GUIDE] The correct way to flash custom ROMs

Since a lot of people have had trouble flashing Custom ROMs, I decided to create a guide that should work on every device (whether A/B partition or not) except on Samsung devices. For bypassing Decryption Issues, adb sideload the .zip files.
GUIDE
I am assuming you have unlocked your Bootloader, flashed TWRP and have some knowledge on ADB.
[This is known as a clean install or clean flash]
Turn off Lockscreen Security
Reboot to Recovery
Factory Reset
Format Data
Copy the .zip files from your PC to your phone / Plug in your USB OTG
Flash the ROM and then the Recovery Installer (No Magisk/SuperSU after)
Reboot to Recovery
Flash GApps and Magisk/SuperSU
Reboot to System
[This is known as a dirty flash]
To update the custom ROM or fix a error (Bootloop after successful first boot, No Service, etc.)
I am assuming you used my guide to flash the custom ROM
These are basically the same steps but without wiping or formatting data
Turn off Lockscreen Security
Reboot to Recovery
Flash the ROM (has to be the same ROM, updated is recommended, older versions may cause issues) and then the Recovery Installer (No Magisk/SuperSU after)
Reboot to Recovery
Flash GApps and Magisk/SuperSU
Reboot to System
LINKS:
Official GApps Website - GApps Github
Official TWRP Website - TWRP Github
Magisk Forum - Magisk Thread - Magisk Github
Official SuperSU Website - SuperSU Forum - SuperSU Thread - SuperSU Github
I recommend the Nano variant of GApps since I have had no error with it.
Enjoy!

[Disabler-ONLY]
`This is basically the same guide just if you want to flash Zackptg5's "Universal DM-Verity, ForceEncrypt, Disk Quota Disablers" or any other disabler which requires different steps.
[This is known as a clean install or clean flash]
Turn off Lockscreen Security
Reboot to Recovery
Format Data
Copy the .zip files from your PC to your phone / Plug in your USB OTG
Flash the ROM and then the Recovery Installer (No Magisk after)
Reboot to Recovery
Flash the Disabler, Magisk and then GApps
Reboot to System
Profit
Dirty Flash? You can't. Usually when using a Disabler you have to clean install your custom ROM.
To update use the method in the first post but for step number 5 Flash the Disabler, Magisk and then GApps

This is a bit much to do. Just use twinnfamous' twrp and you can flash a custom easily. Plus, I flash havoc over crdroid, then back and forth again. So you can flash over. Just have to wipe data and cache after ROM flash and twrp flash then reboot to recovery.
Basically:
Fastboot boot twrp (twinnfamous' 0.7)
Be on 9.0.7 firmware as most custom ROMs use this base right now I think..
Anyway, then flash twrp (twinnfamous' 0.7 installer zip)
Reboot to recovery
Now flash custom ROM
Flash twrp zip
Reboot to recovery
(You'll now be on the opposite slot as before, which means you are on the slot which your new custom ROM was installed)
Wipe > custom > data and cache wipe
Install opengapps nano and magisk 18.0
Reboot system
You'll boot right into the ROM setup screen with no decryption issues along the way as long as you do exactly as I said.
Have fun flashing!

dpryor88 said:
This is a bit much to do. Just use twinnfamous' twrp and you can flash a custom easily. Plus, I flash havoc over crdroid, then back and forth again. So you can flash over. Just have to wipe data and cache after ROM flash and twrp flash then reboot to recovery.
Basically:
Fastboot boot twrp (twinnfamous' 0.7)
Be on 9.0.7 firmware as most custom ROMs use this base right now I think..
Anyway, then flash twrp (twinnfamous' 0.7 installer zip)
Reboot to recovery
Now flash custom ROM
Flash twrp zip
Reboot to recovery
(You'll now be on the opposite slot as before, which means you are on the slot which your new custom ROM was installed)
Wipe > custom > data and cache wipe
Install opengapps nano and magisk 18.0
Reboot system
You'll boot right into the ROM setup screen with no decryption issues along the way as long as you do exactly as I said.
Have fun flashing!
Click to expand...
Click to collapse
You wasted that post just for this? I assure you that my tutorial guarantees success when using a official or unofficial version of TWRP or custom ROM, I also used the method you posted about but it did not work. Also what do you mean by "9.0.7"?
The GApps version you use doesn't have to be Nano and Magisk doesn't have to be v18.0. I'm sure you just copy-pasted this, my method should always succeed. The TWRP doesn't have to be from @twinnfamous , it can be from any developer. This is not a OnePlus 6T only guide.

This flashing process is difficult in my view. Why are you making the simple custom rom flashing process so difficult for the noobs.

_Masked_ said:
You wasted that post just for this? I assure you that my tutorial guarantees success when using a official or unofficial version of TWRP or custom ROM, I also used the method you posted about but it did not work. Also what do you mean by "9.0.7"?
The GApps version you use doesn't have to be Nano and Magisk doesn't have to be v18.0. I'm sure you just copy-pasted this, my method should always succeed. The TWRP doesn't have to be from @twinnfamous , it can be from any developer. This is not a OnePlus 6T only guide.
Click to expand...
Click to collapse
Why are you angry? Haha.
And you linked this from the op6t forums so I'm commenting on that phone. And that's how it's done on that phone. And it does matter which twrp you use for THAT phone because one doesn't decrypt correctly.
Copy and paste? No... And nano is always best if you read xda basically anywhere. Not that I said you HAVE to use nano anyway.. it was just in my steps. And that works for me with any/every ROM. So don't be so opposed to other suggestions. Your method is really weird and involves way too much use of a computer/fastboot. Kind of defeats the purpose of using twrp, don't you think?

Ashwinrg said:
This flashing process is difficult in my view. Why are you making the simple custom rom flashing process so difficult for the noobs.
Click to expand...
Click to collapse
What is making it difficult is encryption/decryption not working right in twrp yet (just a guess). I was having a hell of a time getting anywhere myself and kept getting my storage all jumbled from encryption until I found this thread which put it together for me with the adb sideload part, that bypasses encryption or at least lets you flash what you want when the folder names get all wonky.
Thanks OP for laying it out so clearly for me, I am an old dinosaur that was hesitating on messing with this a/b nonsense until I got my 6T and got the itch again. My trusty dusty nexus 6 is so much easier but it's also been around and has one system and a solid twrp for it.
Cheers! :good:

raiderep said:
What is making it difficult is encryption/decryption not working right in twrp yet (just a guess). I was having a hell of a time getting anywhere myself and kept getting my storage all jumbled from encryption until I found this thread which put it together for me with the adb sideload part, that bypasses encryption or at least lets you flash what you want when the folder names get all wonky.
Thanks OP for laying it out so clearly for me, I am an old dinosaur that was hesitating on messing with this a/b nonsense until I got my 6T and got the itch again. My trusty dusty nexus 6 is so much easier but it's also been around and has one system and a solid twrp for it.
Cheers! :good:
Click to expand...
Click to collapse
Sorry for the late reply, but yes this is for bypassing TWRP Decryption issues.

_Masked_ said:
Since a lot of people have had trouble flashing Custom ROMs, I decided to create a guide that should work on every device (whether A/B partition or not) except on Samsung devices.
GUIDE
I am assuming you have unlocked your Bootloader, flashed TWRP and have some knowledge on ADB.
[This is known as a clean install or clean flash]
Turn off Lockscreen Security
Reboot to Recovery
Format Data (Wipe)
Flash ROM and then the Recovery Installer (No Magisk after)
Reboot to Recovery
Go to Advanced, ADB Sideload then sideload GApps, the Recovery Installer and Magisk
Reboot to System
Profit
I recommend the Nano variant of GApps since I have had no error with it.
Enjoy
Click to expand...
Click to collapse
this step means need do with pc not by twrp

ayed78 said:
this step means need do with pc not by twrp
Click to expand...
Click to collapse
This is to bypass Decryption issues.

Ashwinrg said:
This flashing process is difficult in my view. Why are you making the simple custom rom flashing process so difficult for the noobs.
Click to expand...
Click to collapse
I mean I could make a tool for flashing a custom ROM but I'm sure that there's a tool for that already.

bump. (ignore)

_Masked_ said:
Turn off Lockscreen Security
Reboot to Recovery
Factory Reset
Format Data
Copy the .zip files from your PC to your phone / Plug in your USB OTG
Flash the ROM and then the Recovery Installer (No Magisk/SuperSU after)
Reboot to Recovery
Flash GApps and Magisk/SuperSU
Reboot to System
Click to expand...
Click to collapse
So when are we required to wipe system in addition to just a factory reset? And when do we need to format data?

Krullendhaar said:
So when are we required to wipe system in addition to just a factory reset? And when do we need to format data?
Click to expand...
Click to collapse
Just follow the steps, in order.

Hi.
What if I want to flash a custom kernel on a clean Rom flash? When should I do it? Together with Magisk and Gapps?

What do you mean by "Recovery Installer"? That's the only thing I don't understand.
Thank you for this guide.

Santi3598 said:
What do you mean by "Recovery Installer"? That's the only thing I don't understand.
Thank you for this guide.
Click to expand...
Click to collapse
Same here, I do not understand why I should flash a recovery img when twrp does seem to stay installed after flashing everything. Maybe the custom rom I use does include twrp ?

Custom rom means bugs, possible privacy leak and overall less polished. Developer that are working on them are fantastic but they are most of the time nowhere near as what offer the stock one.
What you need is to check adb, doesn't need root but you can still remove apps (even system one) and do more tweaks.
If needed, check how to patch boot image with magisk, it works on all phone and get you root.
With that, you're free to debloat your device.

Hey just one little question: is it ok to dirty flash with encrypted data folder ?

Santi3598 said:
What do you mean by "Recovery Installer"? That's the only thing I don't understand.
Click to expand...
Click to collapse
Me neither, is it safe to assume that the step can be left out if TWRP is already there and I use it to flash the ROM?
Santi3598 said:
Thank you for this guide.
Click to expand...
Click to collapse
+1

TWRP problem / update

My OnePlus 7 Pro is rooted at 9.5.8 trying to update to 9.5.9
When i try to install OTA it removes TWRP as it would but i can't boot into the system again without booting into TWRP and switching back to slot A. And when i boot to the system settings say that update failed.
I've tried different update methods like
Install update (dont reboot) - Magisk install inactive slot
Download update zip with oxygen updater app - boot into recovery twrp - flash update zip
I rooted my phone a few days ago and for some reason it won't update and i'm stuck on 9.5.8
Slot b is also not readable. SDCARD shows 0mb

What I do is:
Download and install the update
Don't reboot
Then back out and go to magisk downloads
Search for twrp retention and install
Don't reboot
Then back out to magisk main screen and select the first install option
Then select install and then the 4th option ota install slot
Now reboot

Yayodroid said:
What I do is:
Download and install the update
Don't reboot
Then back out and go to magisk downloads
Search for twrp retention and install
Don't reboot
Then back out to magisk main screen and select the first install option
Then select install and then the 4th option ota install slot
Now reboot
Click to expand...
Click to collapse
Tried this too.
When I install oxygen update zip through TWRP and I reboot it goes over to slot b where I can't boot to the system and when I go back to slot a and boot to system update failed

First i disable all magisk modules then I download the full 2gb update, go into twrp, flash the update, flash twrp.zip then flash magisk.zip. Reboot and then re-enable the modules.

if you have Magisk module OOSNativeCallRecorder, you need to remove that module. If still issues then remove all modules.
Guide how to remove magisk modules via TWRP

equlizer said:
First i disable all magisk modules then I download the full 2gb update, go into twrp, flash the update, flash twrp.zip then flash magisk.zip. Reboot and then re-enable the modules.
Click to expand...
Click to collapse
This doesnt work. After flashing it reboots to slot b and update failed

Bradl79 said:
if you have Magisk module OOSNativeCallRecorder, you need to remove that module. If still issues then remove all modules.
Guide how to remove magisk modules via TWRP
Click to expand...
Click to collapse
Okay, this is weird
I chose to remove magisk, twrp and go back to stock with locked oem. Installed the new update perfectly fine. Then I regretted it. So I rooted my device again and set it up only to look under device info where it says that I now have 9.5.8. So basically my phone downgraded itself after rerooting and unlocking bootloader.
I'm now stuck in 9.5.8

PikachuLover said:
Okay, this is weird
I chose to remove magisk, twrp and go back to stock with locked oem. Installed the new update perfectly fine. Then I regretted it. So I rooted my device again and set it up only to look under device info where it says that I now have 9.5.8. So basically my phone downgraded itself after rerooting and unlocking bootloader.
I'm now stuck in 9.5.8
Click to expand...
Click to collapse
Probably switched back to old slot.

Bradl79 said:
Probably switched back to old slot.
Click to expand...
Click to collapse
So I should just try and flash the update, twrp and magisk in this order on the slot I am using now?

Having same problem. No work around?

The best way to update? Personally, I recommend taking full manual control of the update process. Use TWRP to update your ROM (that includes stock OOS) when you want to, and when you need to fix stuff.
- Flash ROM
If you are on slot A and flash a ROM, it goes to slot B.
- Flash TWRP installer zip
Keeps TWRP on both slots, patches boot.img
- Reboot to TWRP, not system
- Flash ROM again
This installs the ROM to the other slot, so now both slots are updated
- Flash TWRP installer zip again
Keeps TWRP on both slots, patches boot.img
- Flash Magisk
Patches the TWRP-patched ROM, allowing it to boot.
- Wipe dalvik
You can wipe data and dalvik instead for a clean flash
- Now reboot to system
Consider flashing BOTH slots (A and B) whenever you update OOS, for two reasons.
First, you don't have to keep track of which slot has which version of OOS should you flash a custom ROM or kernel with a specific version of OOS required as a base.
The second reason is more compelling: the way the data partition changes encryption every update has nearly obviated the reason for A/B slots, in that if newly updated B changes data encryption upon boot and then something happens, you cannot revert to A because A can't read the new data encryption. So the solution is to update both A and B at the same time so both slots use the same encryption and can both access the data partition.
Or like me, run the device decrypted (i. e. without forced encryption).
Good luck!

reaper000 said:
.
Or like me, run the device decrypted (i. e. without forced encryption).
Good luck!
Click to expand...
Click to collapse
I was actually going to do this permanently for better performance, I did test it out for a while and definitely noticed things faster, boot is quicker, battery lasted longer also.
I just hate all the work required to keep decrypt between updates.
I wish Google allowed us to choose whether we want encryption or not.

This maybe a silly question and the form trolls may come out. However ??, decrypting, will we have to do it to both slots? A and B? Or will twrp take care of decrypting both slots. Coming from a one plus 5 we didn't have to deal with this whole slot a and b. Boy what a headache.

virtyx said:
I was actually going to do this permanently for better performance, I did test it out for a while and definitely noticed things faster, boot is quicker, battery lasted longer also.
I just hate all the work required to keep decrypt between updates.
I wish Google allowed us to choose whether we want encryption or not.
Click to expand...
Click to collapse
I'm thing about decrypting, if you don't mind, can you let me know what you mean by all that work?
On the 5t, after decrypting, I just had to make sure to flash no verity script in twrp and that was all.

harpin14789 said:
I'm thing about decrypting, if you don't mind, can you let me know what you mean by all that work?
On the 5t, after decrypting, I just had to make sure to flash no verity script in twrp and that was all.
Click to expand...
Click to collapse
He likely means backing up and starting fresh. I hated that process on my oneplus 5 but after works it was great. This whole slot A and B, is a pesky little bugga.

Yayodroid said:
What I do is:
Download and install the update
Don't reboot
Then back out and go to magisk downloads
Search for twrp retention and install
Don't reboot
Then back out to magisk main screen and select the first install option
Then select install and then the 4th option ota install slot
Now reboot
Click to expand...
Click to collapse
This is what I did as well. Worked beautifully.

harpin14789 said:
I'm thing about decrypting, if you don't mind, can you let me know what you mean by all that work?
On the 5t, after decrypting, I just had to make sure to flash no verity script in twrp and that was all.
Click to expand...
Click to collapse
I manually decrypted
I don't know if the zip works on the 7 Pro
I'd update via twrp
Flash twrp
Flash magisk (after echo KEEPVERITY=FALSE > /data/.magisk)
ADB pull both fstab files in vendor/etc to my pc
And change fileencryption to encryptable and move back
I always kept the fstab files on my internal storage so I didn't need a PC but I always did just incase.

What happens if you have and F2FS formatted /data and
A custom kernel?
Thanks in advance
reaper000 said:
The best way to update? Personally, I recommend taking full manual control of the update process. Use TWRP to update your ROM (that includes stock OOS) when you want to, and when you need to fix stuff.
- Flash ROM
If you are on slot A and flash a ROM, it goes to slot B.
- Flash TWRP installer zip
Keeps TWRP on both slots, patches boot.img
- Reboot to TWRP, not system
- Flash ROM again
This installs the ROM to the other slot, so now both slots are updated
- Flash TWRP installer zip again
Keeps TWRP on both slots, patches boot.img
- Flash Magisk
Patches the TWRP-patched ROM, allowing it to boot.
- Wipe dalvik
You can wipe data and dalvik instead for a clean flash
- Now reboot to system
Consider flashing BOTH slots (A and B) whenever you update OOS, for two reasons.
First, you don't have to keep track of which slot has which version of OOS should you flash a custom ROM or kernel with a specific version of OOS required as a base.
The second reason is more compelling: the way the data partition changes encryption every update has nearly obviated the reason for A/B slots, in that if newly updated B changes data encryption upon boot and then something happens, you cannot revert to A because A can't read the new data encryption. So the solution is to update both A and B at the same time so both slots use the same encryption and can both access the data partition.
Or like me, run the device decrypted (i. e. without forced encryption).
Good luck!
Click to expand...
Click to collapse

A/B slot questions

I tend to mess things up when flashing new ROMs on my Oneplus6. And I usually end up using the MSMdownloadtool to 'fix my phone' again.
* Does MSMdownloadtool install OOS on both slots?
* What do you advise to do before installing a custom (v10) rom?
* I tried doing a fastboot OOS install by mauronofrio, it didnt work. I got into bootloops after running/finishing the flash all bat file. So I used MSMdownloadtool again. I wondered if the fastboot OOS installer guide by mauronofrio installs OOS on both slots??
* Does the fastboot OOS installer do the same thing as MSMdownloadtool?
* In a lot of guides for clean install custom rom I read as first step: wipe system/data. But then I wonder why do you have to install the correct OOS version first, THEN wipe it, and then install custom ROM. Does an OOS installation leave some hidden (essential) files/partitions behind or something?
* Do you guys switch slots in twrp / or do you reboot to switch slots / or do you use the fastboot --set-active a/b command?
* Why does gapps only have to be installed on 1 slot and not on both?
* Why don't custom ROMS install themselves on both slots straight away, like when you flash the twrp installer zip.. ?
Im currently running carbonROMv8 ROM, its running fine so Im not looking to change yet. But im sure im gonna have to use msmdowndtool again when I wanna try out some other ROM in the future. I dont really feel like im having any control off the flashing process. It either works or it doesnt and when it doesnt I cant explain why..

dumbl3 said:
I tend to mess things up when flashing new ROMs on my Oneplus6. And I usually end up using the MSMdownloadtool to 'fix my phone' again.
* Does MSMdownloadtool install OOS on both slots?
* What do you advise to do before installing a custom (v10) rom?
* I tried doing a fastboot OOS install by mauronofrio, it didnt work. I got into bootloops after running/finishing the flash all bat file. So I used MSMdownloadtool again. I wondered if the fastboot OOS installer guide by mauronofrio installs OOS on both slots??
* Does the fastboot OOS installer do the same thing as MSMdownloadtool?
* In a lot of guides for clean install custom rom I read as first step: wipe system/data. But then I wonder why do you have to install the correct OOS version first, THEN wipe it, and then install custom ROM. Does an OOS installation leave some hidden (essential) files/partitions behind or something?
* Do you guys switch slots in twrp / or do you reboot to switch slots / or do you use the fastboot --set-active a/b command?
* Why does gapps only have to be installed on 1 slot and not on both?
* Why don't custom ROMS install themselves on both slots straight away, like when you flash the twrp installer zip.. ?
Im currently running carbonROMv8 ROM, its running fine so Im not looking to change yet. But im sure im gonna have to use msmdowndtool again when I wanna try out some other ROM in the future. I dont really feel like im having any control off the flashing process. It either works or it doesnt and when it doesnt I cant explain why..
Click to expand...
Click to collapse
Yoo.. So Many Questions. Will try to explain in easiest way..
1. Yes. It Does Flash OOS in Both Slot via Qualcomm Download Mode which is mainly for Manufactures to restore Device..
2. Let me clear that Most people's who face issue in booting custom ROM have their data encrypted by previous or stock ROM.
Here is Link Thread to know how to decrypt your device..
https://forum.xda-developers.com/oneplus-6/how-to/tutorial-decrypt-flash-rom-pie-oreo-roms-t3838643
My own Instructions to Flash Custom ROM (Strictly for Decrypted Device):-
Boot Into Recovery
Wipe Cache, Data & System
Flash Latest Stable/Beta OOS10 & Recovery
Reboot Into Recovery(Ignore No OS Installed Warning)
Flash Latest Stable/Beta OOS10 & Recovery again
Reboot Into Recovery
Now flash Custom ROM + Recovery(If Not Included)
Reboot Into Recovery
Flash Gapps(If not included in ROM), Magisk & No-Verity zip(to keep Device dencrypted)
Reboot & Done
For Installing Update on Same Custom ROM :-
Download the Update
Reboot Into Recovery
Flash Update ZIP & Recovery
Reboot Into Recovery
Flash Gapps(If not included in ROM), Magisk & No-Verity zip(to keep Device dencrypted)
Reboot & Done
3. Fastboot Don't always work if You try to Upgrade/Downgrade Android Version as it won't flash Critical Partitions.. Meanwhile MSMDownload tool Use Download mode which is more powerful.
4. Nope. Both are Different AS both use different mode to flash ROM.
5. Clean install required while flashing new custom ROM because Not All ROM uses Same Base. Some uses Stable OOS or some uses Beta OOS... Now, your answer is in these two build Types...
In my Opinion, Custom ROM have nothing to do with your System partition but it most like to related to Vendor Partition... Both Stable & Beta OOS Have little difference in Vendor partition data..
When any dev Build Any ROM, he uses any one of those Build as base for which he tweak/fix bugs.. That's why always Use Dev specified OOS build for avoid Bootloop/bugs..
6. I prefer last option as it's more reliable..
7. It's like when you clean install any ROM.. When you install Any ZIP, It get installed in an Inactive Slot which make those ZIP data Allowed to use in Active slot..
But when you update ROM for 1st time, You install Gapps as well.. So i don't think you need to Install Gapps on 2nd Update as it already installed in both slots.
1st time when Clean installed & 2nd time when Updated 1st time...
8. It's Because how A/B Partition works... Any zip you flash get installed in inactive slot & this applies to both Stock OOS & Custom ROM...
That's why we have to flash OOS twice before flashing any custom ROM.. Which confirms you will have same Vendor partition regardless to your current slot so when you flash custom ROM it will get booted anyways even after an update..
Hope that's helpful.. Any question or help, you can DM or reply here..

Thanks for your reply. It clears a few things up I think. I got a few follow up questions.
I don't really feel comfortable walking around with a decrypted phone. I have already been pick-pocketed once and also lost two smartphones. I would say the chances are likely that also my OP6 is gonna get lost at some point. Having it decrypted would leave it very vulnerable for people trying to access my files.
* So lets say I decrypt my phone. Is it possible then to encrypt the phone again after I have flashed a new ROM (for example LineageOS 17.1)?

dumbl3 said:
Thanks for your reply. It clears a few things up I think. I got a few follow up questions.
I don't really feel comfortable walking around with a decrypted phone. I have already been pick-pocketed once and also lost two smartphones. I would say the chances are likely that also my OP6 is gonna get lost at some point. Having it decrypted would leave it very vulnerable for people trying to access my files.
* So lets say I decrypt my phone. Is it possible then to encrypt the phone again after I have flashed a new ROM (for example LineageOS 17.1)?
Click to expand...
Click to collapse
Well, In my Opinion Every Device is Vulnerable to Hackers.. Doesn't matter if it's bootloader is Locked or Unlocked...
Your device is more Vulnerable at the time you unlocked bootloader because after that you can execute advanced commands with fastboot.....
If your device have pin/pattern, Thief gone reset your device anyway to reset pass.. Eventually your data get wiped as well....
Well, you can encrypt your data but you might face issue while migrating to other ROM if you face any bug + decrypting your encrypted device again is time taking process if you have alot of data..

I mean there is difference between someone being able to reset/delete my data than someone being able to read my data. As far as I know a thief cannot just read my data after he has stolen my device which is encrypted with unlocked bootloader. Sure, he can connect it to his computer and fastboot delete my sh!t but I don't care I got backups of my most important data anyway, as long as he/she cannot just read my device data its fine by me. But how would I encrypt my device again after I installed, lets say, LineageOS 17.1?

dumbl3 said:
I mean there is difference between someone being able to reset/delete my data than someone being able to read my data. As far as I know a thief cannot just read my data after he has stolen my device which is encrypted with unlocked bootloader. Sure, he can connect it to his computer and fastboot delete my sh!t but I don't care I got backups of my most important data anyway, as long as he/she cannot just read my device data its fine by me. But how would I encrypt my device again after I installed, lets say, LineageOS 17.1?
Click to expand...
Click to collapse
you can.. But do it only if you gone use it for long term....
Not fine to waste your whole day transfer your date from mobile to PC then PC to mobile..