yashsingh1/xdaforums huggingface dataset:
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] mar.ste:
In Italy we say "common pain half glad", but in reality the relief is that seems I discovered the root cause of all my troubles with the 3T and (unfortunately) seems MultiROM...

As you can see here https://forums.oneplus.net/threads/...r-the-oneplus-3t.525166/page-52#post-16110494 (and before started from here: https://forums.oneplus.net/threads/disaster-on-my-3t.525940/), I'm almost in the same situation.

I had the OnePlusOne version for two years and everything was fine, this 3T one is driving me crazy with this faults. For me it is a must have tool... [MENTION=1536807]developers[/MENTION], there is some way I can help (sending log or testing or other)?
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] mar.ste:
I don't know what sense it makes, but in my case the first instability I had after few weeks, the second after few days, don't remember if I got one day but now as soon I add a second ROM, boot and start configuring (still empty ROM) will start to stop responding in few minutes!!...

---------- Post added at 12:08 AM ---------- Previous post was at 12:04 AM ----------

What does it mean FCs ?

(this I didn't do...)
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] king0r:
Hallo, I installed multirom on my OP3 successfully and everything works as expected BUT:

When I have installed 2 ROMs I get every time problems with the system PIN (NOT SIM PIN!). It tells me that it would be wrong but this isn't the case! Any solution to fix this problem?
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] comediiian:
FCs.. Force Close Screen
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] fp1707:
Um.. anyone know if it is possible to work around how when u flash open beta and such, you get the screen saying your device is "" but this file is meant for "Oneplus3"?

Help would be appreciated, sorry I forgot to screenshot
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] jabarel:
i cannot chose which rom to boot. i see the 2 options internal and second rom but no chance to select second rom.
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] Car5501:
Device won't turn on

I installed multi rom and installed the modifed version of twrp. I had lineageOS has my primary Rom and attempted to install MIUI as a secondary, after doing so, i rebooted into system but now my phone will not turn on at all. Someone please have a solution :mad:
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] Eliminater:
https://xdaforums.com/oneplus-3/how-to/guide-mega-unbrick-guide-hard-bricked-t3405700
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] 7root:
Read the second post
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] king0r:
Hello, how can I install OTA updates with installed MultiRom?

I mean the Original OTA updates from OnePlus.
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] odooo:
As far as I know, when you are installing the official incremental OTAs, it encrypts your phone again and you will lose root, so you won't be able to use multirom (?)

You have to flash the full OTA ROM zip manually through Recovery and after that SuperSU to stay rooted and decrypted
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] king0r:
Thanks. Worked perfect!
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] DanielL.:
I've tried to install RR Nougat as primary ROM and OOS 3.2.8 as secondary ROM, but after rebooting my phone stops to responde (Black screen and no vibration - nothing)

Fixed my phone with the Mega Unbrick Guide

What am I doing wrong? :confused:
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] Startrek852:
If you had bothered to searched the thread at all, you would know that OOS only works as primary, NOT secondary.
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] DanielL.:
Thanks for the answer and sorry :(
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] Startrek852:
You're welcome :)
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] DanielL.:
If I have understood correctly, this problem will apply to every OOS based ROM, right?

Or is there any OOS 6.0.1 based ROM, which works with MultiRom?
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] Mar-cel:
I can't not find latest MR TWRP and zip
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] Mar-cel:
12.02. Is the latest release?
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] DanielL.:
Nope, 10.03.
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] drmuruga:
Sorry, Latest multirom

https://www.androidfilehost.com/?fid=745425885120720958

Latest twrp

https://www.androidfilehost.com/?fid=817550096634759408
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] DanielL.:
Oh, sorry
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] chaoticoz:
Hello, i am having problems, my OP3 will never boot into the secondary rom. i tried the latest 2 recovery and multirom versions, also 2 different roms (stock OOS, stock OOS Beta).

While installing the roms i get repeated "could not mount storage" errors.

Here is the multirom.log after the device fails to boot: https://drive.google.com/file/d/0B7F8KG_WasREazRUOFJ2OC1PS3c/view?usp=sharing

Thanks for your effort!
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] comediiian:
cmon.. read the colourful and wonderful thread..

OOS never worked as secondaries.

Flash normal twrp, flash primary rom, flash multirom twrp and multirom zip, flash secondaries, flash multiromfix.

always worked for me that way, never had a problem this way.
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] xanthrax:
[MENTION=7867896]comediiian[/MENTION]

I would replace ****in with... colorful, shall we? [emoji57]
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] comediiian:
Done.

Sorry for that ;)
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] chaoticoz:
Thanks.

This is something worthy to add to the OP?
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] Mar-cel:
Delete.
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] chaoticoz:
Only stock OOS or also derivates like FreedomOS?
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] lindahl85:
Running ob6 on my 3T in secondary with this version

multirom-20170308-v33-UNOFFICIAL-oneplus3.zip

Even oos 4.1.3 works as secondary.
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] arifqur:
Can't seem to find the multiromfix or much info about it in this thread.

The only thing that makes sense is that the reference maybe to the buildprop edit mentioned in the OP.

Thanks
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] comediiian:
[/COLOR]

Page 155 in this thread, sorry, unable to copy paste the. zip file.
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] Mar-cel:
Magisk is not working in Secondary roms
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] arifqur:
Thanks for a very speedy reply. Solved my problems.

Very much appreciated
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] comediiian:
Magisk always worked for me, the few weeks i used it.

What issue?
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] Mar-cel:
It doesn't install right, if I flash it on a Secondary ROM
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] comediiian:
Doesn't install right?!
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] Mar-cel:
yes
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] nkk71:
It uses it's own busybox mount and unmount commands, which depending on the installer script, may break proper installation. It'll be fixed when I have time to push updates...
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] comediiian:
I used magisk a few weeks coz SuperuserSU was broken on multirom, but never had an issue at installing.

Strange thing..
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] nkk71:
Yep, hence the "depending on the installer script" (and probably version as well) ;)
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] Marcyvee:
Very big problem! I flashed the last multi rom recovery and zip. The recovery works fine, so I've installed a miui 8.0.2 as a secondary rom. When I reboot the phone, no logo appear. Nothing! Even when I hold the power button... Even holding volume up and connect it to the pc. The mega unbrick tool seems useless! I don't know what I can do. Help me please, thanks in advance

Firmware version 4.1.1
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] raj7749:
be careful when flashing miui... as miui is not unified.. flash device specific rom .. miui for oneplus 3 and 3t is different.. multirom will allow to flash any of these 2, but flash device specific rom.. u phone seem to be going into edl mode.. u need to unbrick now..
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] Marcyvee:
Do you know how?

Edit. No matter a I recover it! Thank you
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] raj7749:
i had also bricked my 3t after flashing miui as secondary, miui was for oneplus 3. this unified multirom allows us to install oneplus 3/3t rom even if the rom is not unified..

Later on i founded miui for 3t which worked well on secondary..
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] 7root:
Has anybody tried booting flymeOS 6 with multirom? Curious if it will work
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] ASHU3003:
it will work but only as primary rom
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] 7root:
Not as secondary? That's sad to hear coz I don't want to give up sweet ExperienceOS
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] nkk71:
Not that I'm saying you're wrong, you're probably right, but I really wonder about these *definitive statements*. I don't even know what that ROM is, but may I ask you why?

Over the years, I've been hearing all this "only as primary", or "flash to primary then swap", etc, etc, etc.

Yet, no one ever bothers with the:

No it wont work because a b c

No it doesn't flash properly because of d e f

No it won't boot because of x y z

Granted, I may not be your average user, especially with MultiROM related things, but the lack of information people like to share is just amazing.

Many (if not most) of the "No you need to flash to primary" posts have been addressed one way or another, and mostly because of a simple test to find the problem, and fix multirom for it.

Nobody, ever bothers explaining why they either know or think it cannot be done :rolleyes:
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] Bearthquake:
"It won't work because it doesn't boot"

To be fair, if everybody knew why it didn't work, there could be a fix in the works. Since there isn't currently a fix for some of these problems, it's safe to assume nobody knows why they exist or where they come from.

As of now, the format you'd like of "it with work because of X" is simply "it won't work because it doesn't"
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] nkk71:
Fair enough, but it won't get fixed that way. Neither will the sdcardfs issue.

I tend to visit various MultiROM threads, including ones absolutely not related to my devices or my builds, and I tend to try and help as much as possible.

A lot of MultiROM code was and is being written for devices and ROMs I do not even have any idea about, so it's really not much to ask for a more descriptive explanation of what is wrong.

The "it doesn't work" post, helps me zero in trying to fix things. It could be device specific, it could be ROM specific, it could be any number of things, but I can't help without any logs and a more detailed explanation.

Small example: Developer Options didn't work on secondary N ROMs a long time before any of my devices had any N previews/ROMs, I still fixed it, nonetheless, thanks to some logs I received.

Probably the best course of action would be for me to remove myself from any threads not related to devices I own, disregard any issues that I don't experience myself, don't bother helping other users, and developers, etc.

But

1- it's not really my nature to be like that :(

2- I've spent a lot of time on MultiROM development, so I don't particularly like it going to waste
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] knpk13:
True. Much appreciated. I didn't realize you didn't own this device. I used to use multirom when the 3T was in the marshmallow days. Right now I'm happy to stick with a single ROM, else I'd test and provide logs to help with development. I don't think I experienced the sdcardfs issue back on marshmallow though. It worked great.
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] nkk71:
I shouldn't be messing in someone else's thread to begin with, maybe I did / do have some influence on this project, maybe I didn't / don't. So I'll just pass by from time to time, to read the "it doesnt work" posts (uhm pages), and move on.
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] sanjeev7:
I have installed latest TWRP (Multi-ROM TWRP) 03rd April build...

It asks for password to decrypt my data!! I have TWRP 3.1.0.1 installed already....it doesn't ask any such passwords....and I'm using AEX Phoneix ROM!!

Any solution to bypass this without wiping data..???
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] vsot13:
Nope. 2nd post, you have to be decrypted to use multirom

Use this:https://xdaforums.com/showthread.php?t=3412228
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] sanjeev7:
Done. MultiRom works now. Thanks :)
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] H4X0R46:
Wow! I own a Nexus 6, not a 3 or 3t, but I considered getting the oneplus 5 when it comes out, well I look here and see a functioning multirom for the 3! I'm really just making this post to say I'm glad the oneplus phones have a greatd dev scene ;) Good work devs! I use multirom on my shamu and hope to see it on the oneplus 5 soon enough when the device is out there, fingers crossed! ;)
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] kiki059:
hi guys i need YOUR HELP PLEASE :'(

i have installed a second rom (carbonROM) with multiROM (install with successfull) and now i ****ing phone dont reboot :@

i think it bricked

oneplus 3 unencrypted root
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] comediiian:
Also flashed multirom fix?

Which root method? SU could be a problem atm with some Roms.

Magisk should work on every Rom as secondary.

And what's the issue?

Stuck in OP Logo?

Reboot to recovery?

Black Screen?
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] Mar-cel:
Magisk don't work on secondary roms.... Testet with Magisk v12 and PAEX, RR, Vertex and sultan Rom.
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] nikhilsnigam:
Magisk works fine. Its just that safetynet doesn't pass. Other than that all works well.
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] kiki059:
Black screen I have contacted OnePlus support
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] comediiian:
Tried the last few days Magisk and SU.. Magisk works on every secondary rom for me.. only safetypass dunno work, but 8 don't care, coz i don't need it :)
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] Mar-cel:
Strange... I don't know why magisk doesn't work for me on secondary roms. If i flash magisk my phone hangs at 1+ splashscreen...
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] comediiian:
Which version of magisk you tried?

also tried an older one for flash?
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] :
Flashed build from "AFH folder here" link, on OOB 16. After all initial preparations, of course. But the phone reboot only in recovery even I press "Reboot -> System".
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] Mar-cel:
Always with Magisk v12 or in RR with the in-build Magisk
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] comediiian:
try an older flashable zip, v11 or v12.

magisk should update automatically after boot.
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] vsot13:
Did somebody get successfully flashed arise viper on secondary and what version?

I'm using Magisc and viper module, but it's break every secondary ROM ? Or I should use SuperSU?
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] drmuruga:
I use pure nexus as secondary with Magick v12 and flash viper arise 2.5.0.5 via ARISE+Deuteronomy+2.94+Modular+AROMA+Installer

https://www.androidfilehost.com/?fid=457095661767141554

everything works well.

You can download Magisk latest through Magisk app.
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] vsot13:
I'll try this. I was using the latest zip Magnum opus and probably that breaks the MR. Thanks
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] ManikandanGuru:
I've been using this MultiROM from the beginning of the development.

After so many issue I went away from MultiROM and using BluSpark Kernel and its TWRP without any issues.

I still want to try the MultiROM but the thing is I couldn't find the latest version or Changelog within this thread as an update post in the middle of somewhere.

Can you please help me with this?

If MultiROM gets updated how should I know that? Because I couldn't find any update post here as I am replying to that outdated post here.

If this message is a mistake please forgive me and help me figure out this problem.

Thanks.
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] comediiian:
The post is updated.

Latest multirom zip and twrp is from 10th March.

Flash it, flash multiromfix on secondaries, have fun.

Have 5 Roms running atm, all without issues.
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] isoladisegnata:
But your RR is in primary or secondary?
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] matze19999:
bugs:

- cant change rom icon in multirom manager

- sometimes I cant boot from multirom manager to another rom when I click on it. Error message: "Cant boot this rom"
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] Neo0:
I also had the "can't boot..." error but noticed that the rom would start nevertheless. It was like my current rom freezes and suddenly the bootscreen of my secondary rom showed up.

Gesendet von meinem ONEPLUS A3003 mit Tapatalk
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] isoladisegnata:
Im on Freedom OS us primary ROM with stock kernel and Omni and Hydro us secondary all work fine..but when I switch the ROM I lose pattern or PIN again...why?
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] GabrielSousa:
when i install a 2nd root, my pin changes :(
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] ysco:
I also have the same problem.

Every time when I switch OS then pattern is not correct anymore and can not login .Then I must go into twrp again and remove some lock screen files from system so that I can login again.

I use a different ROM as second ROM then other user just mentioned so probably not ROM related.

How can we fix this issue ?

Thanks for all.

Regards,

ysco
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] martinusbe:
It's not a recovery/multirom issue, it happens on official twrp too when dirty flashing sometimes.

I opened an issue on Slim bugtracker for it a while ago, and on Slim it seems to be fixed now https://bugs.slimroms.org/issues/29
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] patalao:
It would be good to pass this to devs so they can try to get this fix to their roms.

It's annoying to have always to delete security pattern/pin to boot into rom.
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] geckass:
During the installation the TWRP give me an error

"Could not find `META-INF/com/google/android/update-binary` in the zip file. Error installing zip file `(my folder)`".

What does it mean? And what should i do?
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] Piyush lalwani:
I am on multirom using OOS 3.2.1 as primary and RR 5.7.2 as secondary.

I want to flash bluspark kernel so I will.have to flash it through install zip option of twrp or advanced menu of multirom?
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] Berlino:
If you want to flash blu_spark-oos on OOS 3.2.1 on primary partition just use install option in main twrp menue, if you want to flash blu_spark-custom on RR 5.7.2 on secondary partition use the advanced multirom menue -> list roms -> choose RR -> install zip.

I had non-working touchscreen in multirom boot menue with blu_spark, others reported it as working...so keep this in mind.
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] ysco:
@ martinusbe

Thanks for the reply back to me.

So there is no permanent fix to solve on the current ROMs ?

Regards

ysco..
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] billamin:
lockscreen issue.. setting password in one breaks password for the other roms. have found way for primary rom, but what to do for the secondary roms???
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] Hetalk:
There was a zip file posted by someone earlier. You can flash it to remove pin/pattern locks. Search it. Let me know if you cannot find it. :good:
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] GabrielSousa:
[Android][Guide]Hacking And Bypassing Android Password/Pattern/Face/PI
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] SmashTime1904:
Flashed with DU as primary, no issues. Couldn't find a solid answer whether it would work with anything other than oos as primary.
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] Piyush lalwani:
I think so touch not working on multiboot menu problem was related to elemental X and not with blu spark. However you have experienced it so it may give. I will give it a try.

Thank You.
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] Berlino:
[MENTION=324704]Piyush[/MENTION] lalwani

Latest Ex 0.17 was updated and confirmed working touchscreen in multiboot menue.
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] isoladisegnata:
Yes but I am on Oxy primary with kernel stock..and the problem is the same
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] Berlino:
I have cm13 with ex 0.17-cm installed on primary, OOS as secondary...
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] ManikandanGuru:
Ok.

Then, what is this version? I found this on BitO BSessiOn's AndroidFileHost.

TWRP MultiROM: https://www.androidfilehost.com/?fid=529152257862728805

MultiROM Zip file: https://www.androidfilehost.com/?fid=817550096634771437

It states 23 May 2017 and it says Oneplus3, but I think it's unified.

Can you please explain this?

Thanks.
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] comediiian:
cannot say, coz im still on 10th March zip

never tried the newer one... flash and try, and give a call uf its ok ;)
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] vsot13:
Flash it away, I'm on these without a problem
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] krish@3T:
Will the data of one ROM shared by another

Clear this and I'm in
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] raj7749:
u r out ;) its no
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] the-blind-bandit:
Are there any multiboot alternatives that allow encryption?
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] Mar-cel:
You can try this : https://dbp.noobdev.io
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] knightrider64:
It will not share app data if that is what you are asking, but it does share your internal storage such as music, videos, zip files, etc... You can use apps like titanium backup to transfer apps and thier data to the other rom, but it will not be in sync
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] DanipunK1:
Firmware is shared?

Can i flash a different firmware in secondary rom, without lost the primary firm?

Edit: No, i can not. Firm is shared
[OnePlus 3 ROMs, Kernels, Recoveries, & Other Devel] drmuruga:
No.Dual boot patcher also not allow boot secondary ROM if primary is encrypted.