Questions about flashing global ROMs to a US unlocked Android - General Questions and Answers

Completely new to this, I bought a OnePlus 9 Pro (it said Dual-SIM when I ordered it, then they changed to to single-SIM) and apparently the US version ignores the second SIM slot outright despite being carrier-free. I want to flash a global ROM to it so as to get around this.
1- Does flashing a ROM effect what bands the device recognizes, or is that all hardware based?
2- If I flash a global ROM, will I still get OTA updates and the like?
3- Is there anything that can happen after successfully flashing a new ROM that would require me to re-flash again in the future? Or is it just a one and done type deal?
Thank you in advance

Related

Where to Begin? (Model NXT-TL00)

I'm no stranger to custom recoveries or flashing custom roms, but man, I've been trying to get a handle on this thing.
I just bought a Huawei Mate 8 (The model number on the back is NXT-TL00). I'm guessing it's the Chinese version.
Can someone give me an idiots guide to see what firmware I'm on and flashing this thing with a custom rom? I keep seeing references to having "Firmware Bxx", and I'm not even sure how to check that.
This is a vanilla phone straight from eBay and the official build Number in the settings screen reads NXT-TL00C0B197. I'm assuming that means I'm on B197? Does that mean I need to update all the way up into the B3xx's to install the newest roms?
I feel like a complete idiot. I'm used to just unlocking a bootloader, installing a custom recovery, and flashing a rom. It seems like like this is going to be a little more difficult coming from something like a Samsung or LG. Just need some friendly advice. Thanks in advance XDA Folks.
Hello.
Im coming from LG , and yes , its a bit more difficult.
this phone have some variants on different country, but hardware is same , or nearly on all models
Im french and i bought one in china and receved a DL00.
I was able to transform it into an europeean version to get rid of chinese bloatware. my phone is L29C432 B320. C432 is the european rom model. B320 is version of the rom. I always stick to my model to avoid any problems
Yeah, you are on B197.
Its easy as ****. First of all check if you got single or double sim card phone (guess its dual-sim chinese phone )
then if u dont mind - unlock bootloader (check guide, its on the forum, easy access to find it )
then flash TWRP and root your phone (again, a guide + software from here ->http://forum.xda-developers.com/mate-8/development/tool-srk-tool-huawei-t3369797
then - install a software that you want to :
thanks to @jbmc83
AL10 = chinese version, unlocked
TL00, DL00, CL00 = chinese versions, locked to chinese carriers
L29 = international version, unlocked, dual sim
L09 = international version, unlocked, single sim, only available in 3/32 GB
now everything is clear. just ask , people are nice here and able to help you bro.
have a good time with your phone
ps. i dont like to flash custom roms so i recomend you to do it like this -> unlock -> flash TWRP -> flash http://forum.xda-developers.com/showpost.php?p=65544452 from here -> Root -> delete unneccecary apps with root delete program and you are ready to rock like us
what's the result ?
Anyone tried to install a European Software on this Phone Model NXT-TL00 please ?
Thank you

MHA-L29C605B111 to MHA-L29BC605B111

Hello forum, sorry if the question i am going to ask is a bit noob. I have a mate 9 (MHA-L29C605B111 CUSTC605D111). The thing is i am getting annoyed by the notifications in numners not the icon. The thing is via FF i only find the MHA-L29BC605B111 CUSTC605D162. That cust is the same as a friend of mine which has the icons. My questions are:
1) Is there a command to enable the icons?
2) Is there any risk via FF to change from C605 to BC605 as is only OTA-MF?
3) Is this the correct way to change the CUSTID?
Thank you for every help you may give me as i am new in the huawei world!!:good::good:
The_Pacifier said:
Hello forum, sorry if the question i am going to ask is a bit noob. I have a mate 9 (MHA-L29C605B111 CUSTC605D111). The thing is i am getting annoyed by the notifications in numners not the icon. The thing is via FF i only find the MHA-L29BC605B111 CUSTC605D162. That cust is the same as a friend of mine which has the icons. My questions are:
1) Is there a command to enable the icons?
2) Is there any risk via FF to change from C605 to BC605 as is only OTA-MF?
3) Is this the correct way to change the CUSTID?
Thank you for every help you may give me as i am new in the huawei world!!:good::good:
Click to expand...
Click to collapse
1. No. Huawei uses numbers in old ROMs. But in new ROMs you can select numbers or icons.
2. You can not change ROM via OTA-MF in this case. This type of ROM contains difference between previous version and current only. If you will flash it over other ROM (non-native) - ROM will not be flashed. I don't know what difference between cust D111 and D165.
Symbol 'B' in MHA-L29BC605 means beta or test.
Maybe, you can flash but ROM version is same B111, so very little chances to flash by OTA type.
If you're not planning to sell phone or not using special functional from your mobile operator, it is better to rebrand on world or china ROM. The most popular are C636 (Asia Pacific), C432 (Europe), C00 (China). But you will lost ability to return on your customization, cause there is no full version of your current ROM.
Hey man, check out this thread...
https://forum.xda-developers.com/mate-9/help/huawei-mate-9-mha-l29c605b111-help-t3638341/page2
5[Strogino] said:
1. No. Huawei uses numbers in old ROMs. But in new ROMs you can select numbers or icons.
2. You can not change ROM via OTA-MF in this case. This type of ROM contains difference between previous version and current only. If you will flash it over other ROM (non-native) - ROM will not be flashed. I don't know what difference between cust D111 and D165.
Symbol 'B' in MHA-L29BC605 means beta or test.
Maybe, you can flash but ROM version is same B111, so very little chances to flash by OTA type.
If you're not planning to sell phone or not using special functional from your mobile operator, it is better to rebrand on world or china ROM. The most popular are C636 (Asia Pacific), C432 (Europe), C00 (China). But you will lost ability to return on your customization, cause there is no full version of your current ROM.
Click to expand...
Click to collapse
Many thanks. I am a little afraid of rebranding at the moment. I do not understand de process correctly and I do not want to mess up my phone. I do not understand what is important about my operator, as this phone is not from an operator or the man who sell it to me said that, as i live in argentina this phone is not available here and i do not know from which country is from. Is there a posibility that i get otas or i will be stuck in this?
The_Pacifier said:
Many thanks. I am a little afraid of rebranding at the moment. I do not understand de process correctly and I do not want to mess up my phone. I do not understand what is important about my operator, as this phone is not from an operator or the man who sell it to me said that, as i live in argentina this phone is not available here and i do not know from which country is from. Is there a posibility that i get otas or i will be stuck in this?
Click to expand...
Click to collapse
Where is your phone from? How you bought it?
Unfortunately, phones with extra customization are not updated often. I reviewed many stock ROMs, and ROMs with cust are hosted without FullOTA type even! So it is very hard to restore original state back.
Imho, if anyone wants buy Mate 9 and don't want problems with ROM or flashing process, he/she must buy phone with popular region.
I don't wander what Huawei included in addition to region when named cust. Maybe, it is special settings for domestic mobile operators, maybe some bloatware, maybe something else.
About existing OTAs.
Need to download them all and check what is inside. Changelogs are different, so it is chance that files are incremental. But I will travel for 2 weeks and without ability to get internet. Sorry.
I bought my phone to a guy who import them here in argentina. But i do not have any carrier branding in the ROM and i put my chip and it is not branded. Does my carrier affect in the time of the updates or no? As is not branded. I just reading reddit that the chip you put in the phone affects otas as mine c605 is destinated to colombia and mine is from argentina. Is really true that? In addition that since i bought the phone (1st May 2017) never received an OTA and still on october 2016 security patch.
5[Strogino] said:
Symbol 'B' in MHA-L29BC605 means beta or test.
Click to expand...
Click to collapse
Thanks for clarification. I was wondering why they changed C to BC for some firmwares.
5[Strogino] said:
Where is your phone from? How you bought it?
Unfortunately, phones with extra customization are not updated often. I reviewed many stock ROMs, and ROMs with cust are hosted without FullOTA type even! So it is very hard to restore original state back.
Imho, if anyone wants buy Mate 9 and don't want problems with ROM or flashing process, he/she must buy phone with popular region.
I don't wander what Huawei included in addition to region when named cust. Maybe, it is special settings for domestic mobile operators, maybe some bloatware, maybe something else.
About existing OTAs.
Need to download them all and check what is inside. Changelogs are different, so it is chance that files are incremental. But I will travel for 2 weeks and without ability to get internet. Sorry.
Click to expand...
Click to collapse
Well man. Thnxs for all your info. I got the guts to rebrand this thing. Everything went OK in the first try. The only weird thing that make me crap my pants was that after the rebranding process (When i has finished intalling in the EMUI recovery) the phone start rebooting as crazy :crying: :crying: . It posted huawei logo, then black screen and start rebooting not allowing to enter either fastboot or ADB, after some time doing that the phone booted OK :victory: . Then flashed again the same model option and it was all a huge success :highfive:. Was the rebooting normal o not? Because in the guide that was translated to spanish that was a bit more accurate did not mention anything neither here. Any way, my phone is OK now i have the icons that was the thing that bothered me a lot and i am happy with that, THANKS TO EVERYONE :highfive::highfive:

AT&T Note 8 on T-Mobile

Upgraded to Note 9, want to pass my Note 8 on to a T-Mobile user. I want a complete T-Mobile experience, so all T-Mobile bloat and settings are needed (VoLTE, Hotspot, etc...) . Note 8 currently has latest CRID OTA from ATT. Looking for help in determining the correct way to proceed. I am having AT&T carrier unlock the device, so I would make this change after confirmed unlock. Also, once this is finished, will the device receive T-Mobile OTA updates?
I have read through https://forum.xda-developers.com/galaxy-note-8/how-to/guide-sm-n950u-u1-t3685884 but am confused. I see lots of mention of combination files, CSC changing, etc... that seem overkill for what i'm looking for.
Are these the steps I need to take?
1) Download latest Odin compatible TMB Firmware (which is what version?)
2) Download Odin on PC
3) Factory reset Note 8
4) Flash TMB firmware
5) Insert TMB SIM card
6) Success?
Yes just download this file
https://www.sammobile.com/firmwares/galaxy-note8/SM-N950U/TMB/download/N950USQU5CRIA/237765/
Flash everything with Odin and you will have a full 100% T-Mobile Note8 with all carrier features working
Sent from my SM-N950U1 using Tapatalk
Vish.N said:
Yes just download this file
https://www.sammobile.com/firmwares/galaxy-note8/SM-N950U/TMB/download/N950USQU5CRIA/237765/
Flash everything with Odin and you will have a full 100% T-Mobile Note8 with all carrier features working
Sent from my SM-N950U1 using Tapatalk
Click to expand...
Click to collapse
I saw here that simply flashing a different carrier firmware will not actually change carriers?? Is that correct?
https://forum.xda-developers.com/showpost.php?p=74087669&postcount=3
Someone in that thread said I would need to flash an unlocked U1 firmware and then the TMB firmware?
I am about to do this as well, switching from AT&T to T Mobile using my AT&T branded Note 8. I just wanted to confirm that it's as simple as downloading the latest Android Pie firmware for T Mobile and flash it to the AT&T branded phone? Any precaution like some other thread mentioned to flash the U1 (unlocked) firmware first then flash the T Mobile firmware?
Also, eventually, I will be giving this Note 8 to someone in China. At that point, is it better to flash the unlocked version of firmware or just leave the T Mobile firmware on it?
Thanks so much for your help.
Note: the phone is already unlocked.
I just wanted to let everyone know that I went and got T Mobile. After the new SIM card was inserted in my AT&T Note 8, after a reboot, it did something, a screen with a SIM car graphics and some moving dot. Then it rebooted itself again, and then T Mobile splash screen showed up. It even added the bloatware from T Mobile. So, Android 9 for Note 8 probably has both ROMs? I also checked the firmware version. It shows the latest T Mobile ROM.
I didn't have to do anything other than just inserting the new SIM card from T Mobile.
This is very interesting to me, and the store guy couldn't believe his eyes either.
de2000 said:
I just wanted to let everyone know that I went and got T Mobile. After the new SIM card was inserted in my AT&T Note 8, after a reboot, it did something, a screen with a SIM car graphics and some moving dot. Then it rebooted itself again, and then T Mobile splash screen showed up. It even added the bloatware from T Mobile. So, Android 9 for Note 8 probably has both ROMs? I also checked the firmware version. It shows the latest T Mobile ROM.
I didn't have to do anything other than just inserting the new SIM card from T Mobile.
This is very interesting to me, and the store guy couldn't believe his eyes either.
Click to expand...
Click to collapse
And i was wondering why my phone still showing at&t bloatware even after installing the Verizon firmware. ? Now i understand Cuz I'm using at&t sim. Good to know?
Another update!
I just got updated by T-Mobile to the latest firmware after converting over as previously stated. I have to say that the update page on the phone for the T-Mobile firmware is MUCH nicer and informative than the ATT version. It tells you how much time left, the version numbers, and even a "what's new" section...
After this update, my phone is actually better at battery usage.

Should I flash my Galaxy S7 Verizon to stock firmware in West Africa?

Hello.
I have a Galaxy S7 that I got about 5 weeks ago. I paid to have it in the box but the person got a secondhand one. I am in West Africa but someway somehow I got a Verizon one that is unlocked for any carrier. Anyway I checked and some functions were not working. Private mode is not working, there's no software update option anywhere (I checked developer mode) and some features I've seen on YouTube are not even on the phone. I'm stuck on Android 6 and can't update so I made up my mind to flash a custom ROM but turns out Verizon's bootloader is locked which will make such a task impossible. Some days ago though, I found out that official Verizon ROMs can be flashed without unlocking the bootloader and this raised some questions which I want to ask here.
Here's the info at the about phone page
MODEL NUMBER - SM-G930V (there's Verizon on the back of the phone so I think this is true)
ANDROID VERSION - 6.0.1
BASEBAND VERSION - G930VVRU4API3
BUILD NUMBER - MMB29M.G930VVRU4API3
1. Can I really flash a stock Verizon ROM for the Galaxy S7 without bricking my phone and with a locked bootloader?
2. If I were to flash a stock Verizon ROM will the phone be locked to Verizon again? I'm asking this because this is the only phone I have and I'm supposed to use this for 2 years!
3. Should I flash the same baseband version or will another Verizon one work?
4. If all the above questions are true, where can I get official Verizon stock ROM for my device?
If you have any questions for me please let me know.
Thanks
TheMannyzaur said:
Hello.
I have a Galaxy S7 that I got about 5 weeks ago. I paid to have it in the box but the person got a secondhand one. I am in West Africa but someway somehow I got a Verizon one that is unlocked for any carrier. Anyway I checked and some functions were not working. Private mode is not working, there's no software update option anywhere (I checked developer mode) and some features I've seen on YouTube are not even on the phone. I'm stuck on Android 6 and can't update so I made up my mind to flash a custom ROM but turns out Verizon's bootloader is locked which will make such a task impossible. Some days ago though, I found out that official Verizon ROMs can be flashed without unlocking the bootloader and this raised some questions which I want to ask here.
Here's the info at the about phone page
MODEL NUMBER - SM-G930V (there's Verizon on the back of the phone so I think this is true)
ANDROID VERSION - 6.0.1
BASEBAND VERSION - G930VVRU4API3
BUILD NUMBER - MMB29M.G930VVRU4API3
1. Can I really flash a stock Verizon ROM for the Galaxy S7 without bricking my phone and with a locked bootloader?
2. If I were to flash a stock Verizon ROM will the phone be locked to Verizon again? I'm asking this because this is the only phone I have and I'm supposed to use this for 2 years!
3. Should I flash the same baseband version or will another Verizon one work?
4. If all the above questions are true, where can I get official Verizon stock ROM for my device?
If you have any questions for me please let me know.
Thanks
Click to expand...
Click to collapse
Yes, you can flash Verizon stock firmware without issues, as long as you are not trying to flash an older Verizon stock firmware than the version you already have. In other words, you can upgrade, but you can't downgrade.
As for flashing a west African firmware, Nn, Verizon devices have a locked bootloader, the locked bootloader will not allow you flash anything except Verizon stock firmware. Attempting to flash anything from another region or from a different device will only result in a soft-bricked or hard-bricked device. You can only flash the Verizon stock firmware for your specific model number.
Sent from my SM-S767VL using Tapatalk
Droidriven said:
Yes, you can flash Verizon stock firmware without issues, as long as you are not trying to flash an older Verizon stock firmware than the version you already have. In other words, you can upgrade, but you can't downgrade.
As for flashing a west African firmware, Nn, Verizon devices have a locked bootloader, the locked bootloader will not allow you flash anything except Verizon stock firmware. Attempting to flash anything from another region or from a different device will only result in a soft-bricked or hard-bricked device. You can only flash the Verizon stock firmware for your specific model number.
Sent from my SM-S767VL using Tapatalk
Click to expand...
Click to collapse
Hi! Thanks for replying! So where can I get a Verizon stock firmware that is an upgrade of mine and what region should I download from? Also which version of ODIN should I use?
Thank you very much!

Do all AOSP ROMs break T-Mobile variant?

I have a T-Mobile OP7 pro that I've had unlocked from the network, and I've been running the international version of OOS for some time. This week I tried changing to Havoc OS (because I've used it on previous phones), and now I'm stuck in a bootloop. I don't even get to the ROM's boot screen. I know I can put factory software back on there, but I'm not ready to give up unless someone here knows whether it's impossible to run AOSP ROMs on a T-Mobile OP7 pro.
You're better off converting the phone into the international variant using the MSM tool. I have a converted unit, and all ROMs work properly after conversion.

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