[Q] Locked bootloader w/ custom ROM and recovery? - T-Mobile, Samsung Galaxy SIII

Is it possible for a S3 to have a locked bootloader with a custom ROM and recovery?
I don't remember ever unlocking the bootloader, yet I have a custom ROM installed; AFAIK, I have to have an unlocked bootloader to flash custom ROMs. Yet when I ran the Synergy IMEI backup script, it skipped the process due to a locked bootloader.
This paradox is hurting my head.

Its not locked

Related

Which ROMs can be installed with a locked bootloader?

Which ROMs can be installed with a locked bootloader? Mine can't be unlocked. As far as I know there's no way to get a different kernel with a locked bootloader.
You can only install custom ROMs based on stock ROM and use stock kernel. You can also head to the development section and find a ROM that runs on a phone with a locked bootloader. The developer will usually tell you if his ROM can run on a phone with locked bootloader.
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[Q] stock and rooted 4.1.1

hello,
i want to flash an aokp rom,do i need to update the bootloader and modem first?
Before updating the bootloader beyond 4.1.1, unlock your phone using the free method, flash a custom recovery, then the custom ROM.
If you want to know if a particular ROM needs a specific bootloader, look at the updater script in the ROM itself for supported bootloaders.
Before updating your you should be aware that you cannot down grade your bootloader once you are on the 4.3 bootloader, this does affect which roms you can run. Do a search on 4.3 bootloader there are many threads with very good info on this topic.

[Q] Carrier Unlock

Is carrier unlocking (only) bootloader related?
In other words, will a custom rom or a custom recovery interfere with the carrier unlock?
If you want to carrier unlock the phone you must be on the original stock rom (the bootloader can be unlocked). You can't carrier unlock the phone on a custom rom. So no they are not related.
So the advice is to carrier unlock the device first before even unlocking the bootloader and after that proceed with custom roms if you wish.
my bootload is unlocked, i have a custom recovery and a custom rom installed
so you are recommending that i restore stock recovery and stock rom and then unlock it (but i dont need to lock the bootloader)?
To carrier unlock you must return to your stock rom and recovery otherwise it won't work. The bootloader can stay unlocked.
I unlocked mine while using MaximusHD with lyapota kernel and twrp recovery installed and I had no problems at all, maybe you just need a Rom based on sense and NOT aosp, cyanogen mod etc.

Locked vs Unlocked Bootloader

Hi i would just like to ask something that has been confusing me for quite a while now. I've had my hydrogen for a week and ive unlocked bl, rooted now with a custom rom(rr rom 5.7.4 working great!!) I did not actually wanted to unlock the bootloader but to be safe, i followed the instructions.
so here it is, before mi max, I had a mi4i, an xperia, and a zenfone 4, done the same, root,install custom recovery, and flashed custom roms.. the only unit i unlocked bl was the xperia since i wanted to flash Official CM, (CM's comes with their own kernel right? so flashing them needs bl unlocked) but when BL was locked i could still flash roms, manual update, (ROMs that are meant for locked bl only). then with mi4i (locked bl) i was able to root, install twrp, manual flash updates, official roms, and custom rom (CM13).
The part where I am confused is, why do i need my bootloader unlocked if i was going to root,install twrp, and flash custom roms only on my max without touching the kernel? When in my previous experiences as long as i dont need touch/tweak the kernel, i dont need my bootloader to be unlocked.
Sorry for long post..
I hope my question makes sense

Flash rom to unlocked T-Mobile (solved)

My Phone is currently unlocked...
If I completely flash a new stock or custom rom will it relock again?
Will it ask for unlock code?

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