Downgrade Bootloader - AT&T Samsung Galaxy S 5

Currently on 5.1.1 OF3/OA1 Bootloader, if i downgrade back to 5.0 i will need the correct BL correct? i don't like this oa1 BL anyways, way to many bugs ever since i flashed to it.
Thanks for any help..
JBriZzeL

JBriZzeL said:
Currently on 5.1.1 OF3/OA1 Bootloader, if i downgrade back to 5.0 i will need the correct BL correct? i don't like this oa1 BL anyways, way to many bugs ever since i flashed to it.
Thanks for any help..
JBriZzeL
Click to expand...
Click to collapse
No, you'll still need the OA1 bootloader.

Related

[Q] Which bootloader is required for a custom rom of 5.1 or 5.0

i have a XT1058 MOTO X 2013 Bootloader unlocked with latest TWRP recovery+root on Stock 4.2.2 rom I havent upgraded from 4.2.2 So I am on the 30.B4 bootloder. Now my question is will I be able to flash any rom on this bootloader? like im going to flash 5.0 and maybe 5.1cm nightly.. Now I want to know if i have to upgrade my BL to 30.B7? or the 4.2.2 30.B4 will work fine? I cannot proceed without getting complete information about the booloaders. Also I will flash CM11 before flashing the CM12. Please help. Please tell me which bootloader supports most custom roms and also let me know if i update my phone to 4.4 will my bootloader get locked? i cant risk getting locked again. I HAVE TO KEEP MY BOOTLOADER unlocked any how. Please tell me what should i do in detail... Thanks in advance.
BUMP
*****Edit****** Got the answer to my question the most common bootloader that is required by the custom roms is the stock 4.4.4's bootloader.. So first flash KK 4.4.4 FIRMWARE if you want to flash various custom roms....
sorry dude, sometimes it gets dead in here ,just gotta accept the fact.
How did you unlock your BL? via moto website? BL is permanently unlocked if so. And once BL unlocked, you can flash whatever custom rom you want man.
Go ahead and jump to 4.4.4 and check it out, 5.1 is here so might as well.
hbenz2008 said:
sorry dude, sometimes it gets dead in here ,just gotta accept the fact.
How did you unlock your BL? via moto website? BL is permanently unlocked if so. And once BL unlocked, you can flash whatever custom rom you want man.
Go ahead and jump to 4.4.4 and check it out, 5.1 is here so might as well.
Click to expand...
Click to collapse
You are absolutely right... but now someone told me that i dont really need to care about the bootloaders... Because the Custom Rom probably flashes the required bootloader during the flashing process.. So im going to flash Cm11 on my 4.2.2 bootloader and then Aicp 5.1.x and I'll let everyone know how it goes... thanks man
and my BL is permanently unlocked man. Thanks for your help :good:
good job man:good:

[Q] How many times can I OTA before its too late?

Hey ho guys. I have a 5S with the Downgrade to NCE flash found on this board. I would like to have the latest Kitkat without updating to Lollipop and getting the locked bootloader. I just downgraded today to NCE and bravely did one OTA. It got me to NG3. Can I OTA again to get OA1 or will it jump me to OC4? Or should I use one of the methods here on the board to upgrade and totally avoid OTA? Thanks, later.
Sowden said:
Hey ho guys. I have a 5S with the Downgrade to NCE flash found on this board. I would like to have the latest Kitkat without updating to Lollipop and getting the locked bootloader. I just downgraded today to NCE and bravely did one OTA. It got me to NG3. Can I OTA again to get OA1 or will it jump me to OC4? Or should I use one of the methods here on the board to upgrade and totally avoid OTA? Thanks, later.
Click to expand...
Click to collapse
If you want root capabilities i wouldn't take any OTA. You'll still have to go back to NCE to root anyhow i believe. As far as the boot loader it is and always has been locked on the AT&T S5. The only method for root is towel root and I'm not sure if it'll work on NG3. If not you'll have to go down to NCE
dirtydodge said:
The only method for root is towel root and I'm not sure if it'll work on NG3. If not you'll have to go down to NCE
Click to expand...
Click to collapse
Yeah, I should have preference that I am after root. But towelroot works on NG3, you can read about that here.
http://forum.xda-developers.com/att-galaxy-s5/general/g900and3tong3keeprootota-zip-t2862299
After I took the brave OTA I followed the threads instructions and it worked. There is a thread here that talks about root for OA1.
http://forum.xda-developers.com/att...to-root-g900aucu2aoa1-4-4-4-2-3-2015-t3021120
It says just to take the OTA. I guess its still safe to take the OTA then after NG3? And I can't seem to find any rom on here thats stock OA1. Anyone know if I aren't seeing it? Thanks.
Sowden said:
Yeah, I should have preference that I am after root. But towelroot works on NG3, you can read about that here.
http://forum.xda-developers.com/att-galaxy-s5/general/g900and3tong3keeprootota-zip-t2862299
After I took the brave OTA I followed the threads instructions and it worked. There is a thread here that talks about root for OA1.
http://forum.xda-developers.com/att...to-root-g900aucu2aoa1-4-4-4-2-3-2015-t3021120
It says just to take the OTA. I guess its still safe to take the OTA then after NG3? And I can't seem to find any rom on here thats stock OA1. Anyone know if I aren't seeing it? Thanks.
Click to expand...
Click to collapse
Most of the roms are based on nce or ng3. If you go to oa1 and flash a nce or ng3 rom your phone will be slow because of the different bootloader, and the camera is screwed up. I'd stay on ng3 and not worry about oa1. That's my opinion. I'm on 5.0 running the Twi5ted rom and having no problems with it. Most devs have moved to 5.0 lollipop and the 4.4.2 - 4.4.4 roms will be more and more abandond in my opinion.
dirtydodge said:
Most of the roms are based on nce or ng3. If you go to oa1 and flash a nce or ng3 rom your phone will be slow because of the different bootloader, and the camera is screwed up. I'd stay on ng3 and not worry about oa1. That's my opinion. I'm on 5.0 running the Twi5ted rom and having no problems with it. Most devs have moved to 5.0 lollipop and the 4.4.2 - 4.4.4 roms will be more and more abandond in my opinion.
Click to expand...
Click to collapse
Ah see I haven't tried any of the custom roms posted on here yet. But can I have NC3 as stock and on another ROM Slot (using Safestrap) have a Lollipop rom? Having one slot be 4.2.2 and the other be 5, basically. So the bootloader is different from NC3 to OA1, good to know. I'm glad I stopped at NC3 then. Thanks for your help.
Sowden said:
Ah see I haven't tried any of the custom roms posted on here yet. But can I have NC3 as stock and on another ROM Slot (using Safestrap) have a Lollipop rom? Having one slot be 4.2.2 and the other be 5, basically. So the bootloader is different from NC3 to OA1, good to know. I'm glad I stopped at NC3 then. Thanks for your help.
Click to expand...
Click to collapse
I'm not sure on the different slots and bootloader mainly because when i used different slots the battery drain was unbearable. I don't know if they every fixed the battery drain issue when using different slots. It was bad enough that i just stuck to the stock slot and flashed only in that slot.

[Q] Downgrade system image

I know it can be done, as long as you don't OTA after. If I were to downgrade to 4.4.4 or 5.0.2 with 5.1 bootloader, would that offer a software method to root and unlock or no?
Edit: Welp, I answered my own question... I can't even flash anything because of sig checks.
darknessrise1234 said:
I know it can be done, as long as you don't OTA after. If I were to downgrade to 4.4.4 or 5.0.2 with 5.1 bootloader, would that offer a software method to root and unlock or no?
Edit: Welp, I answered my own question... I can't even flash anything because of sig checks.
Click to expand...
Click to collapse
I am looking for a downgrade without removing the bootloader . just that there's no way .
Maliktor said:
I am looking for a downgrade without removing the bootloader . just that there's no way .
Click to expand...
Click to collapse
The bootloader can not be downgraded. That would cause a brick. I'm looking for a way to downgrade the system/boot images to 4.4.4 so I could root to get an unlock on the bootloader via sunshine.
darknessrise1234 said:
The bootloader can not be downgraded. That would cause a brick. I'm looking for a way to downgrade the system/boot images to 4.4.4 so I could root to get an unlock on the bootloader via sunshine.
Click to expand...
Click to collapse
You can at least try using Kingroot to root the device for now, and wait till Sunshine is compatible with Lollipop.
With "mofo" you can flash firmwares to the phone on a locked bootloader, I wonder if there is a way to flash just system.img using mofo. Maybe ask that at their thread.
eksasol said:
You can at least try using Kingroot to root the device for now, and wait till Sunshine is compatible with Lollipop.
With "mofo" you can flash firmwares to the phone on a locked bootloader, I wonder if there is a way to flash just system.img using mofo. Maybe ask that at their thread.
Click to expand...
Click to collapse
Mofo does not work with 5.1 bootloader and kingroot does not work with 5.1. Sunshine is updated to unlock so long as you have root but I cannot find root method for 5.1.
Edit: Okay, so I'm seeing that some people HAVE downgraded their system image but eventually had a brick from OTA flashing BL. How do you downgrade the system image? If I can get to 4.4.4, I can root and unlock and go back to 5.1.

been out of the loop, is it safe to flash newest dok2 baseband/bootloader?

Hey guys. I've been out of the loop. Is it safe to flash the DOK2 baseband/bootloader? Or should i just stay on COG2? Does it still have problems with root? You cant downgrade to 5.0.1 or 4.4.4 after flashing right ?
ayeitschris said:
Hey guys. I've been out of the loop. Is it safe to flash the DOK2 baseband/bootloader? Or should i just stay on COG2? Does it still have problems with root? You cant downgrade to 5.0.1 or 4.4.4 after flashing right ?
Click to expand...
Click to collapse
If you wish to stay on 5.0.1 or 4.4.4, then its not safe. Correct, you cannot downgrade. I tried going back to Darthstalker (5.0.1) and it bootlooped after going to DOK2 baseband/bootloader. I heard there is a way to downgrade the bootloader, but its not a very straight forward way
Plus, to add to that, there isn't a regular root method i do not believe. It's Systemless Root with means you don't have full root capabilities
Just upgrade baseband only like i did. Its fine then.

Latest Bootloader - Can I Install Lollipop or KitKat Roms?

Hello
I have a moto g titan xt1068 dual sim which was originally running stock lollipop 5.02 and was updated with the OTA stagefright update and then the OTA MM6.0 official by motorola.
I have since installed custom roms cyanogen 13.0 and cyanpop 6.2
I know my bootloader is now the latest, so my question is can I now only install MM based roms? or can I still install KK & LP based custom roms?
or will installing LP or KK based roms hard brick my device?
Many thanks for any help
i'd like to know it too...
I'm not sure, but I can't really see why not. The bootloader being the latest changes jack squat on the question of being able to install older versions of Android or not. I mean, I WAS able to install the stock LP ROM on the MM bootloader, but your mileage may vary.
Yeah you can. Just don't try to downgrade your bootloader while downgrading to previous stock Android version. Itll brick your phone.
But just flashing custom Roms is safe.
sagar846 said:
Yeah you can. Just don't try to downgrade your bootloader while downgrading to previous stock Android version. Itll brick your phone.
But just flashing custom Roms is safe.
Click to expand...
Click to collapse
ooh yeah, i remember i installed the MM Stock, and after installed the KK Stock, and with KK made a OTA update to LP and bricked my phone :/
sagar846 said:
Yeah you can. Just don't try to downgrade your bootloader while downgrading to previous stock Android version. Itll brick your phone.
But just flashing custom Roms is safe.
Click to expand...
Click to collapse
That's bullsh-t.. You can always downgrade your rom, but you have to be sure you're not downgrading your bootloader. So if you're using oneclick installer you have to remove the command from the script which will try to downgrade your bootloader. Also after downgrading you have to be super sure that you will not update it with OTA!
Btw.: I'm not sure downgrading through fastboot can even brick your phone.
zman01 said:
That's bullsh-t.. You can always downgrade your rom, but you have to be sure you're not downgrading your bootloader. So if you're using oneclick installer you have to remove the command from the script which will try to downgrade your bootloader. Also after downgrading you have to be super sure that you will not update it with OTA!
Btw.: I'm not sure downgrading through fastboot can even brick your phone.
Click to expand...
Click to collapse
What if i downgrade to kk without downgrading the bootloader and then i flash back mm firmware? (with rsd lite for example)
h4ck3r00 said:
What if i downgrade to kk without downgrading the bootloader and then i flash back mm firmware? (with rsd lite for example)
Click to expand...
Click to collapse
You can flash whatever version you want if you're not downgrading your BL
zman01 said:
You can flash whatever version you want if you're not downgrading your BL
Click to expand...
Click to collapse
So, if am right, i can do whatever i want but i must not touch the bootloader.
Thanks man! :good:
h4ck3r00 said:
So, if am right, i can do whatever i want but i must not touch the bootloader.
Thanks man! :good:
Click to expand...
Click to collapse
That's right.. You can touch your bootloader only when you have to upgrade it, for example in case of updating to Android N. Which I think will never happen (of course officially).
Here you can find a nice guide to downgrade your Android version.
zman01 said:
That's bullsh-t.. You can always downgrade your rom, but you have to be sure you're not downgrading your bootloader. So if you're using oneclick installer you have to remove the command from the script which will try to downgrade your bootloader. Also after downgrading you have to be super sure that you will not update it with OTA!
Btw.: I'm not sure downgrading through fastboot can even brick your phone.
Click to expand...
Click to collapse
FFS, Did you actually read my post. I said NOT to Downgrade the bootloader while downgrading to a previous stock version via fastboot.
sagar846 said:
FFS, Did you actually read my post. I said NOT to Downgrade the bootloader while downgrading to a previous stock version via fastboot.
Click to expand...
Click to collapse
Yeah sorry, I was a bit tired.
Thank you all for your help it is much appreciated.

Categories

Resources