yashsingh1/xdaforums huggingface dataset:
[OnePlus 8 Guides, News, & Discussion] geiswiz:
I am currently on TMO OP8 version 11.0.1.1 and want to convert to global since I have recently received my unlock token. I'm just wondering if I need to use the MSM tool to go to 10.5.7 or can I just do the following:

fastboot flash cust-unlock <unlock_token.bin>

fastboot oem unlock

Extract all files from fastboot rom zip (I downloaded 10.5.7 and 10.5.12 from here - https://sourceforge.net/projects/fastbootroms/files/OnePlus 8/)

Reboot to fastboot

Run flash-all.bat

A bunch of stuff will flash and phone will reboot twice

Complete setup (skip what I can to get to booted)

You are now on Global Rom and can upgrade to A11 with local upgrade or oxygen updater

Thanks!
[OnePlus 8 Guides, News, & Discussion] mattie_49:
I'm on Verizon and best I remember if your a carrier branded device & take local upgrade or system update you will loose data. Because it flashes the global modem. You can always try though. No limit on how many times we can msm.
[OnePlus 8 Guides, News, & Discussion] hungmung:
I am on tmobile and took an ota update and still have data. It may be different for the Verizon model however because it's a slightly different model due to the mmwave function.
[OnePlus 8 Guides, News, & Discussion] mattie_49:
And QTI telephony stuff for sure.
[OnePlus 8 Guides, News, & Discussion] easyto:
hi ,I am unable to unlock the bootloader. Is there any thread for step by step
[OnePlus 8 Guides, News, & Discussion] hungmung:
Instructions for it are in the op. The link right under where he says and now your bootloader is unlocked
[OnePlus 8 Guides, News, & Discussion] easyto:
thanks ,I did all the steps..bootloader get unlocked.I flashed it also by the latest version

11.0.0-GLOBAL-OnePlus8Oxygen_15.O.30_OTA_0300_all_2010031624_c5e68b42b3325-FASTBOOT..but sadly it is not rebooting and stuck on a Crashbump mode

can anyone can help to fix this..everything step went well only after flashing it came like this.

thank you
[OnePlus 8 Guides, News, & Discussion] UniX1rm:
I swapped the phone a while back. Usually MSM back as something wasn't flashed correctly. Let me know if you need help.
[OnePlus 8 Guides, News, & Discussion] easyto:
can you please share
[OnePlus 8 Guides, News, & Discussion] UniX1rm:
Sure. Share which part exactly. Message me if you need help.
[OnePlus 8 Guides, News, & Discussion] easyto:
hey how can we go back ..as my device get stucked at crash mode .

or please suggest me where I did wrong.

after having unlock code from t-mobile ,bootloader get unlocked and I get it flashed with 11.0.0-GLOBAL-OnePlus8Oxygen_15.O.30_OTA_0300_all_2010031624_c5e68b42b3325-FASTBOOT stock..
[OnePlus 8 Guides, News, & Discussion] easyto:
as i told that my device get stucked at crash mode.so please suggest me is there any particular file to flash..as device is able to come in fastboot mode ,but if we hard reset it,it wont able to come on home page
[OnePlus 8 Guides, News, & Discussion] rophiroth:
I was on TMO android 11.0.1.1, patched boot. I Just factory reset and try to directly flash all of global A11 fastboot version. Got a lot of "Invalid sparse file format at header magic" errores haha and some others... so no luck. What should I try now? MSM global A11?, fastboot a earlier global version or msm a earlier version... or msm back to tmo?

Other errors are:

fastboot: error: cannot load 'opproduct.img': No such file or directory

Are those errors common?

PS: Try to flash all fastboot A10 Global, and failed to flash everything ahaha.. "remote: 'Flashing is not allowed for Critical Partitions"

PS2: Cannot MSM to Global, dont recognize my phone.

PS3: Now phone only turn on at "crushdump mode", No other mode start :'C

PS4: I've succesully MSM to tmo factory(drivers wsnt fine :$), then unlock bootloader and try to flash global A10 15_O.12 version got many errors, but android start as global without phone network, can connect to wifi, there is no OTA available:

Spoiler content hidden.

PS5: I start over again, msm tmo a10, then unlock bootloader, try again flash all fastboot img of global A10(15.O.12) with same error and all the same, restart into fastboot to re lock bootloader and see if I can now OTA and the phone got corrupted after re locking xD... I think its because I have MSM opened BEWARE! will try again...

PS6: I start all over again, and instead flashall global A10 15.O.12 I flashall A10 15.O.21... now no errors, start with phone network and can also OTA :D! Will report anything if something wrong...

Thank you
[OnePlus 8 Guides, News, & Discussion] sabre66:
This is real good insight. Thank you. Let us know how it goes.
[OnePlus 8 Guides, News, & Discussion] rophiroth:
One day long, OTA to 11.0.4.4, rooted, great performance overall. Dont have 5G on my country to test that btw.
[OnePlus 8 Guides, News, & Discussion] GrandMstrBud:
It comes up and boots to recovery every time after flashing the global rom
[OnePlus 8 Guides, News, & Discussion] rophiroth:
what global ROM do you flash it? I have same trouble with 10.5.3... but 10.5.12 was fine, I have to rollback to my tmo factory version before win MSM.
[OnePlus 8 Guides, News, & Discussion] GrandMstrBud:
That's what I did was will back to the latest version of 10 and then did the flash all to the global version of 10 and from there did the OTA go version 11 and all is good now
[OnePlus 8 Guides, News, & Discussion] sabre66:
Did you all use 10.5.12 OR 10.5.21? I find .21 in the MSM thread, but not .12. Thanks
[OnePlus 8 Guides, News, & Discussion] rophiroth:
. 21 is "15.o.21" and it's the same as 10.5.12 I don't know why.
[OnePlus 8 Guides, News, & Discussion] sabre66:
thank you, will use .21 on the MSM thread.
[OnePlus 8 Guides, News, & Discussion] sabre66:
oh well. got all the way to having the Global Rom. Then set some of it up, but it did not see my sim. so i relocked the bootloader. Now it says "Your device is corrupt. It can't be trusted and will not boot" -- can get to fastboot, but adb does not see it, and cant reflash rom or do MSM tool. Any ideas?

Think i am toast as i cant get into edl holding the vol keys, was only able to with adb command.

Update-tried a new cable and it took!
[OnePlus 8 Guides, News, & Discussion] k9r4n16:
Hey, I have a OnePlus 8 from T-Mobile (IN2017) that did not work. I have it up and running again now, but wasn't sure why it wasn't working.

As soon as I flashed the global version with Android 11, the device went into crashdump mode. I'm not sure how I got the device back up and running to be honest, because I thought I flashed it to both sides (A and B). Either way, it's working right now.

Only thing I'm not sure about is if my device will actually work. When I got the phone, it had a sticker on it saying Sprint and I guess they gave me a Sprint device or something? Will this still work?

Let me know if there's any more information you need to help! Also, pre-warning I cannot access an MSM, don't have an accessible Windows machine.
[OnePlus 8 Guides, News, & Discussion] kartheeksrm:
Can you please re-upload this file if possible? Looking for mobile 5g modem.
[OnePlus 8 Guides, News, & Discussion] kartheeksrm:
try msm and then reflashing. it worked for me
[OnePlus 8 Guides, News, & Discussion] mattie_49:
You are aware that your modem file contains your IMEI numbers aren't you? Those aren't real good to be putting out there in the wild. People can do crazy things with them. Get your device blacklisted . Steal and copy and use on a device they have that doesn't have correct IMEI . Just thought you might need to know this.
[OnePlus 8 Guides, News, & Discussion] kartheeksrm:
can anyone upload t mobile one plus 8 modem 5g? Having issues after flashing to global rom. Network unstable.

Thanks. I wasn't aware of this.

If I really find a modem file, I cant really flash since it messes with IMEI? Is that correct? Also I didn't want to reinstall everything to flash the new modem because it requires the fastboot unlock again
[OnePlus 8 Guides, News, & Discussion] trinidude4:
I didn't know this either, but if I extract the modern file right from the full zip, I think that would be ok to use, right?

I don't think you'll need to reflash everything just to flash the modem, but someone may know better.
[OnePlus 8 Guides, News, & Discussion] themoveforward:
Has anyone figured out getting Dual SIM working after TMO->Global conversion? Got a dual SIM tray for it. The second SIM card is seen, but refuses to connect to any network or even search.
[OnePlus 8 Guides, News, & Discussion] December55:
I tried to convert form tmobile firmware to the global firmware, but now the phone will only boot into fastboot mode . I can also get into recovery mode and fastbootd, but that is about it. Does anyone have any insight into how to fix this.

Thanks
[OnePlus 8 Guides, News, & Discussion] k9r4n16:
I ended up like this too, in crash dump mode, but I guess I only tried to flash the one slot (A) and not both so I was able to recover the device. Since you still have access to fastbootd, you could flash a custom ROM or if you have a Windows device you can MSM back to the T-Mobile software which you will need to unlock the bootloader again. You can still use the same unlock token though, so no waiting 2 weeks about it. If you go the custom ROM route, I'm currently running ShapeShift OS and it's perfect. Google Pay works out of the box without Magisk Hide.
[OnePlus 8 Guides, News, & Discussion] December55:
Where can I find the custom rom. I can't seem to get the msm tool working since adb is unauthorized from my laptop for some reason? Also, thank you for your quick response
[OnePlus 8 Guides, News, & Discussion] k9r4n16:
Whenever I ran into issues with ADB, I uninstalled or got rid of ADB and reloaded it. I am on Linux though, which is why I also went the custom ROM route afterwards. Make sure you are running CMD as administrator too.

https://xdaforums.com/t/rom-11-0_r34-official-stable-shapeshiftos-instantnoodle.4259325/

To ensure it works, what I did was first flash the recovery system from the payload.bin file, then booted into the new recovery. Then, I wiped the device, entered fastbootd from the recovery and began the flashing process, flashing each image to both slots. Then, reboot to recovery again and wipe before booting. Should boot within seconds too. :)
[OnePlus 8 Guides, News, & Discussion] December55:
Thx for your help. I've got linux/windows (though I personally dislike windows) dualboot so i will try the custom rom.
[OnePlus 8 Guides, News, & Discussion] December55:
When you say both slots do you do:

fastboot flash partition_name_a name.img

fastboot flash partition_name_b name.img

for every image file?
[OnePlus 8 Guides, News, & Discussion] k9r4n16:
Yes
[OnePlus 8 Guides, News, & Discussion] December55:
Great. So freakin fast man, you are a champ. Got it working. Thank you so much
[OnePlus 8 Guides, News, & Discussion] December55:
Will I need to revert to a tmobile modem.img to use a sim card?
[OnePlus 8 Guides, News, & Discussion] k9r4n16:
Nope! Signal for me has been perfect and comparable to stock regarding speed and signal strength. Literally have no issues with this ROM.
[OnePlus 8 Guides, News, & Discussion] December55:
I don't seem to get any signal with my sim card. They don't seem to have a modem.img in their payload.bin. Did you flash a custom modem.img?
[OnePlus 8 Guides, News, & Discussion] k9r4n16:
No, I did not. I didn't need to flash any modem, it was up and running immediately. :/
[OnePlus 8 Guides, News, & Discussion] December55:
Well thank you for you help, at least my phone is not a fastboot brick anymore.
[OnePlus 8 Guides, News, & Discussion] k9r4n16:
modem-11.0.1.2.IN55CB

MediaFire is a simple to use free service that lets you put all your photos, documents, music, and video in a single place so you can access them anywhere and share them everywhere.

www.mediafire.com

Found the above modem for OnePlus 8 5G Android 11 (T-Mobile). Download it and try and flash that, worst it can do is leave you without signal still. Hopefully it works though.
[OnePlus 8 Guides, News, & Discussion] December55:
Thanks again for your help. Sim card is working
[OnePlus 8 Guides, News, & Discussion] trinidude4:
I wanted to check if anyone tried using the tmobile modem with 11.0.5.5 global. Previously, I was on 11.0.4.4 global and I flashed the modem from 11.0.1.2 tmo and it worked fine. After updating to 11.0.5.5, the tmo modem no longer works. I even tried the modem from 11.0.1.3 tmo, but I get the same problem. The sim card isn't recognized. The global modem works fine though so not too big of a problem.
[OnePlus 8 Guides, News, & Discussion] Iot221:
Does anyone know how to do this on a Verizon phone?
[OnePlus 8 Guides, News, & Discussion] Ace42:
Anyone know if 5G SA functions on int'l when converting from tmobile?
[OnePlus 8 Guides, News, & Discussion] k9r4n16:
I wasn't able to get my modem to work on the international version, so I'm not 100% sure. I can try to gain signal again tonight, but I need my device to be stable during the day time. I think you have to first flash the European build with the T-Mobile or global modem and then flash the global ROM afterwards. Something like that. Try looking through some of the previous replies for it.
[OnePlus 8 Guides, News, & Discussion] Ace42:
Sounds like a headache! I might as well remain on T-Mobile build, because I keep my phone on SA (network mode NR only). Converting my OP7P was straightforward and didn't take long, whereas some op8s get stuck in crash dump or won't boot fully. Then I even read some messages about no SIM on int'l.

Edit: I'll MSM to TMobile 10.5.7, the flash global 5.7. Hopefully all ends well
[OnePlus 8 Guides, News, & Discussion] k9r4n16:
Honestly, I cannot stand Oxygen OS 11. I really had to switch if I am to keep this device. I remember converting my 7T was really easy as well, but I guess they changed something with the 8 which made it harder to convert. I'm on Pixel Experience ROM right now, and it works great. Google Pay works right out of the box and everything.
[OnePlus 8 Guides, News, & Discussion] Ace42:
Finally on global OOS11. Signal works fine, didn't lose SIM at any point (curious as to why others did). I'm going to stay on oxygen until custom ROMs move to a12.

I've had nothing but problems with registering my card with gpay. Though I blame this on Capital One, and not Google.
[OnePlus 8 Guides, News, & Discussion] k9r4n16:
It's because your bootloader is unlocked. I would recommend rooting with Magisk and enabling Magisk hide. That almost always works.
[OnePlus 8 Guides, News, & Discussion] Ace42:
Oh, I don't mean since unlocking. I meant in general, been using a Moto Edge for about 8 months. There's always an issue with the step that involves signing into my bank app to grant gpay permission.

I currently have magisk + bluspark kernel. I might open a checkings at Chase again, if the issue is specific to CO 360.
[OnePlus 8 Guides, News, & Discussion] awsan:
Hello everyone, There was a way on the 7t with out getting the bootloader unlocked from T-mobile or oneplus.

Is that still possible?

Thanks
[OnePlus 8 Guides, News, & Discussion] k9r4n16:
Wrong thread buddy.

Check this guide out though. https://xdaforums.com/t/t-mobile-7t...thout-unlocked-bootloader-sim-unlock.4153943/
[OnePlus 8 Guides, News, & Discussion] awsan:
No need to jump the horse my dude :) , I am asking if the 7t trick is still possible on the 8.

Thanks
[OnePlus 8 Guides, News, & Discussion] k9r4n16:
Oh I'm sorry, misread it. Didn't mean to come off as rude, sorry if I did.

I haven't seen anything on that for the 8 yet, but I'll have a little search. If there is, I'll definitely be doing it so I can get Google Pay back. It's not working with or without Magisk Hide. 🙄
[OnePlus 8 Guides, News, & Discussion] awsan:
No worries, even mine came a little passive aggressive.

I am on the hunt as soon as I get any info I will share it in here.
[OnePlus 8 Guides, News, & Discussion] graycorgi:
I see a lot of warnings to backup persist.img before doing anything. However, there seems to be no way to root my phone without first MSMing back to Android 10 per the thread on rooting this device, because no one has yet uploaded a patched boot.img for 11.0.3.5.IN55CB.

Is it safe to MSM first, then root and backup my persist.img? Or is the MSM tool the thing that risks damaging my persist.img?
[OnePlus 8 Guides, News, & Discussion] k9r4n16:
All you need is an unlocked bootloader then you can flash Magisk using Lineage Recovery. My auto-tools project can root it for you I believe if you have Linux.
[OnePlus 8 Guides, News, & Discussion] graycorgi:
I managed to get magisk on there and root is working, but the adb shell su "dd if=/dev/block/bootdevice/by-name/persist of=/sdcard/persist.img" command does not actually do anything. No error, but it's not putting a "persist.img" file on my root directory either. Running it from a terminal app on the phone is the same result. I'm not sure how I'm supposed to back up the persist partition as that's the only command I can find anywhere and it doesn't work

Edit: I used the terminal on the phone to navigate where persist was and did dd if=persist of=/sdcard/persist.img - not sure why that needed to be done that way but it worked. Time to convert my phone
[OnePlus 8 Guides, News, & Discussion] k9r4n16:
Maybe try of=/storage/emulated/0/Download to put it directly in your downloads. Also, I done it by adb shell then su then the command.
[OnePlus 8 Guides, News, & Discussion] graycorgi:
Now I'm having the problem that many earlier posters had and I didn't see a clear resolution :/

When I run flash-all.bat it runs fine, but when it reboots into fastbootd halfway through it just "waiting for device". USBlogview doesnt even register a device connected to my PC at that stage... not sure what to do.

Edit: I MSM'd again, re-unlocked bootloader, reinstalled the OnePlus USB drivers, and tried again. I had the same problem, but this time I saw "IN2017" in device manager with no driver installed. Before, it was not showing any device at all - not sure why it was different this time around. I think its because the cable I was using the first time was not that great and errored out, and it wouldn't work with a different cable until I MSM'd again. I let Windows Update search for and install a driver, and now it's working!

Steps that worked for me in the end:

Unlocked BL, rooted with magisk, backed up persistent and modem

MSM to TMO 10.5.7

Unlocked BL again

Used flash-all.bat and said yes to wipe

When it rebooted into fastbootd while running the batch file, my PC needed to search windows update for drivers otherwise it was stuck on waiting for device (I had drivers for ADB, fastboot, and EDL already installed but still needed to do this)

Once it finished it booted up into global 10.5.12, signal and fingerprint were working

Accepted full OTA offered for the global Android 11

Once it booted into Android 11, verified fingerprint and modem were working

After all of that, I also decided to relock the bootloader with fastboot oem lock, install the open beta, and do a reset just to have a nice clean slate. It's working great! Finally have the Always-On Display which the T-Mobile version still doesn't have 7 months later... And my widevine L1 is back! Was stuck on L3 after last few beta-quality T-Mobile updates
[OnePlus 8 Guides, News, & Discussion] afdals:
Can I relock the bootloader after converted to Global Rom?
[OnePlus 8 Guides, News, & Discussion] DZxda19:
Hey guys. I read every comment in this thread. So let me just get to the point. I'll appreciate it if someone reply to me.

1. I have MSM my TMO Onplus 8 to go back to OOS 10.5.7

2. Like the purpose of this thread I want to convert to global. Some one is having issues flashing GLOBAL A10 (I'm thinking flashing OOS 10.5.11) and losing signal, modem and what not and suggesting to flash EUROPE version. What should I do ?

3. TO be frank, I have my imei number changed on my mobile, now I want to get this right in one way. What should i flash to get rid of TMO and get local updates and for me to be able to root my ONEPLUS 8 and goto A11.

Thanks.
[OnePlus 8 Guides, News, & Discussion] Some_Ghost:
I know this is a late response but someone linked you to msm tools here for other variants of you hadn't noticed you actually need to use this msm tool strictly for T-Mobile

https://xdaforums.com/oneplus-8/how-to/op8-unbrick-tool-to-restore-device-to-t4093043

---------- Post added at 11:53 AM ---------- Previous post was at 11:51 AM ----------
[OnePlus 8 Guides, News, & Discussion] ecompton59:
i found TMobile modem its fastest speeds. then global eu was slowest heres T-Mobile twrp backup i used https://xdaforums.com/oneplus-8/hel...a-t-mobile-t4110607/post82771605#post82771605 i backed up my global with twrp replaced with this backup
[OnePlus 8 Guides, News, & Discussion] garz:
So would I need to flash 10.5.6, boot it and do a local upgrade to 10.5.7 as that's the latest? If I go straight to latest, then there's no local upgrade to flash...?
[OnePlus 8 Guides, News, & Discussion] PlzRoot:
couldnt get this to work. it wouldnt boot up, sometimes the those global roms didn't even install. everything failed.
[OnePlus 8 Guides, News, & Discussion] Some_Ghost:
you have to be in fastbootd, not the bootloader. abd reboot fastboot, then fastboot reboot fastboot and make sure your adb is up to date by downloading the latest platform tools
[OnePlus 8 Guides, News, & Discussion] PlzRoot:
Can you post exactly what to do? Right now I'm on the T-Mobile firmware with root. I noticed my system update option is gone. I can't install global cause it keeps failing. Not sure what I'm doing wrong but this guide wasn't exactly easy to follow. This is my first OnePlus phone and the first time I've rooted a phone since the older galaxy phones.
[OnePlus 8 Guides, News, & Discussion] LLStarks:
Are betas possible once converted?
[OnePlus 8 Guides, News, & Discussion] ab2233:
So is it not possible to root on tmobile firmware? im new to rooting and seems so confusing for me. my phone is paid off and unlocked but im still lost on what to do. is anyone willing to help me get rooted?
[OnePlus 8 Guides, News, & Discussion] Some_Ghost:
yes I installed the dev preview earlier today

---------- Post added at 11:13 PM ---------- Previous post was at 11:10 PM ----------

did you unlock your bootloader?
[OnePlus 8 Guides, News, & Discussion] ab2233:
Not yet. But I can.
[OnePlus 8 Guides, News, & Discussion] Lomeli12:
So, I did this and now everything except for the bootloader brings up CrashDump Mode. I can't even enter EDL mode to do the MSM brick recovery, and trying to use TWRP brings up extractTarFork() process ended with ERROR: 255. I'm guessing I'm pretty screwed.

Edit: Nevermind, I just suck at holding both volume buttons I guess. Still can't get the modem working.

Edit 2: Redid the steps and now the modem is suddenly working before I even flashed my modem backup? I don't know but it works I guess!
[OnePlus 8 Guides, News, & Discussion] The_Anomalist:
when i try to fastboot flash i keep getting an error message cannot flash on critcal partitions? ive already tried unlocking, wiping relocking, fastboot flashing unlock_critcal, msmtool. im baffled.
[OnePlus 8 Guides, News, & Discussion] Some_Ghost:
In order to root you need to unlock your bootloader so you need to submit your unlock code to oneplus if you have not already then within 7 days you'll get your unlock token then you can unlock your bootloader by flashing the token. After unlocking your bootloader I highly recommend converting to global or Europe ROM that way you can have root and have software updates because you will not receive software updates on the T-Mobile firmware once your bootloader is unlocked
[OnePlus 8 Guides, News, & Discussion] ab2233:
I appreciate your response. I have submitted the application for the unlock token and I'm currently waiting for it. Also, the written tutorial here to convert to global is quite confusing for me. Along with the modem flashing thing that I have no idea how to do. Just wish there was a video explaining in more detail. But I guess I will figure it out somehow. Thanks again
[OnePlus 8 Guides, News, & Discussion] Some_Ghost:
Okay so I'll pm ya :laugh: