[Q] T-Mobile ROM on Verizon S3 - Verizon Samsung Galaxy S III

I bought a Samsung Galaxy S3 (SCH-I535) Verizon on Ebay. My service has been with T-Mobile for about 10 years so I don't want to switch carriers. I have unlocked the phone and am running a T-Mobile SIM card. I have text, talk, and limited data (Edge). Still have the stock ROM and stock recovery. The phone is rooted and running 4.4.2 Kit Kat. The bootloader is still locked and I have installed and ran quite a number of apps trying to unlock it. I read where Safestrap 3.71 would work but when I install it and boot to recovery, I still have stock Verizon recovery. It is loaded with bloatware and I would really like to install a custom ROM that is written specifically for T-Mobile.
Is there any way to downgrade this phone to Jelly Bean and get it completely unlocked with a custom recovery and rom? Preferably using a form of d2tmo?

bcook0407 said:
I bought a Samsung Galaxy S3 (SCH-I535) Verizon on Ebay. My service has been with T-Mobile for about 10 years so I don't want to switch carriers. I have unlocked the phone and am running a T-Mobile SIM card. I have text, talk, and limited data (Edge). Still have the stock ROM and stock recovery. The phone is rooted and running 4.4.2 Kit Kat. The bootloader is still locked and I have installed and ran quite a number of apps trying to unlock it. I read where Safestrap 3.71 would work but when I install it and boot to recovery, I still have stock Verizon recovery. It is loaded with bloatware and I would really like to install a custom ROM that is written specifically for T-Mobile.
Is there any way to downgrade this phone to Jelly Bean and get it completely unlocked with a custom recovery and rom? Preferably using a form of d2tmo?
Click to expand...
Click to collapse
Since you have a d2vzw you cannot run a d2tmo rom on a verizon phone. You can however run a d2lte rom on any S3 LTE variant. If you want to hard brick your phone you can run a tmo rom however I wouldn't ever recommend that
From my CM11 S3

Also, you cannot downgrade to jelly bean and you cannot unlock the bootloader.

landshark68 said:
Also, you cannot downgrade to jelly bean and you cannot unlock the bootloader.
Click to expand...
Click to collapse
I'm normally pretty good about remembering the bootloader thing. Must of been daydreaming that time, thanks man
From my CM11 S3

Related

[Q] Verizon Galaxy S3 Rooting, Cyanogen, and Unrooting

So I am looking to root my GS3 4.1.2 on Verizon I already have with a previous GS3 but after a while Verizon no longer recognized my device so I lost all capabilities to call txt etc. I tried to unroot my device and it bricked. Anyways
Questions
1. Stable vs. Nightly which is recommended
2. How to unroot GS3 running 4.1.2 through Cyanogen Rom.
3. How to activate a Verizon device.
Thanks for all the help I can get!

[Q] Galaxy S3 Verizon 4.3 TWRP?

I just got a Verizon Galaxy S3 and I want to install Cyanogenmod 11 on it. I am familiar with installing it however I am not familiar with how to install a custom recovery on this device. It has the 4.3 update. I have tried all of the ways depicted on TWRP's website to no avail. I am willing to use any recovery necessary to install Cyanogenmod. Please help me! I can't stand TouchWiz!
southpaw5271 said:
I just got a Verizon Galaxy S3 and I want to install Cyanogenmod 11 on it. I am familiar with installing it however I am not familiar with how to install a custom recovery on this device. It has the 4.3 update. I have tried all of the ways depicted on TWRP's website to no avail. I am willing to use any recovery necessary to install Cyanogenmod. Please help me! I can't stand TouchWiz!
Click to expand...
Click to collapse
Im sorry but Verizon locked down the bootloaders on 4.3-4.4. Most recent unlockable bootloader is on 4.1.2. You can use a downgrading service at mobile tech videos to go back to 4.1.2 and unlock your bootloader for fifty bucks. But for now, you're stuck with safestrap and TW based roms. Sorry dude.
Sent from my Unlocked SCH-I535 running whatever rom I've chosen for the day.

cyanogenmod on s3

hey guys, so im sure many have tried to put cyanogenmod on a VZW Samsung Galaxy s III with 4.4.2 OTA on it. but couldnt. im really looking to put CM11 on it. im very much so new to rooting, and flashing roms, but i already rooted my device, and flashed the stock firmware back, due to not having a CWM back up and getting "system software not authorized by verizon" warning.
so my question.
can i downgrade my firmware from 4.4 to earlier to have an unlocked bootloader without bricking it? do i need to go to 4.3 and then 4.1.2?
because before 4.3 it had an unlocked bootloader.
I really want CM because i cant stand touchwiz anymore. thanks guys . help a newb out
oh and. should i use towel root? or another rooting method
Your now on the locked bootloader and you cannot downgrade to another firmware. You can root with towelroot but that's truly about all you can do
From my CM11 S3

[Q] Rooting Verizon Galaxy Note II 4.3 after tripping Knox and 4.1.1 downgrade

Okay guys. Here we go. I screwed up the other day while trying to load a custom ROM following a friends instructions. I tripped Knox on my Verizon Note II 4.3 and was forced to downgrade to 4.1.1. My phone is no longer rooted and I am trying to figure out how to root from 4.1.1 with a locked bootloader and then use safestrap to install custom ROMs. Sadly I cannot find any info anywhere after several hours of searching. I've read up on Knox and I could care less about warranty info (I bought the phone used after all) and I just want to be able to load custom ROMs so I can better enjoy my phone while being able to restore APN settings since I am running on a non-Verizon carrier service. Please help!
Edit: I used RootChecker to make sure that my phone is no longer rooted after downgrading to 4.1.1
Edit: Fixed with Kingo Root

[Q] Galaxy S3 - Can I install a custom recovery? (NOT SAFESTARP)

Since Verizon forced us to update to 4.3 Jellybean back in 2013, Galaxy S3 users using the carrier have been locked out of their bootlader, and, to my knowledge, no one has found a way around this.
Well, I'm kind of tired of the stock ROM my GS3 (running 4.4.2 Kitkat), and it's Touchwiz interface. While I do like it, I would prefer something like Cyanogenmod, however, because of the locked bootloader, I can't install a custom recovery that's not Safestrap, and I already screwed my phone up BADLY using that to the point where the recovery actually deleted my OS and didn't recognize the CM file I tried flashing on it.
I was hoping someone on here would know if there is a way to unlock the bootloader of my GS3, or if there is another recovery I can stick on my phone to use to flash my CM file so I can upgrade to CM12, since it's not terribly likely that Samsung will release a Lollipop update for the device.
ANY help would be appreciated.
DaJesuZ said:
Since Verizon forced us to update to 4.3 Jellybean back in 2013, Galaxy S3 users using the carrier have been locked out of their bootlader, and, to my knowledge, no one has found a way around this.
Well, I'm kind of tired of the stock ROM my GS3 (running 4.4.2 Kitkat), and it's Touchwiz interface. While I do like it, I would prefer something like Cyanogenmod, however, because of the locked bootloader, I can't install a custom recovery that's not Safestrap, and I already screwed my phone up BADLY using that to the point where the recovery actually deleted my OS and didn't recognize the CM file I tried flashing on it.
I was hoping someone on here would know if there is a way to unlock the bootloader of my GS3, or if there is another recovery I can stick on my phone to use to flash my CM file so I can upgrade to CM12, since it's not terribly likely that Samsung will release a Lollipop update for the device.
ANY help would be appreciated.
Click to expand...
Click to collapse
No, you cannot unlock the bootloader or flash a custom recovery other than safestrap. Which means you cannot flash CM on your phone. Many, many people have been working at finding a way to unlock these Samsung bootloaders, and no one has found a way yet. So I doubt anyone will ever find a way to unlock the bootloader.
Does this apply to the T-Mobile version?
Sent from my SM-G900T using XDA Free mobile app

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