Downgrade to MM? - Verizon Samsung Galaxy S7 Questions & Answers

Is it possible to downgrade all the way back to 6.0.1?

Yeah, just flash the image in Odin.

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About downgrading with custom firmware

I had a stock untouched I9506 on LP 5.0.1 which I rooted and flashed TWRP. Can I now flash through TWRP a KitKat stock ROM?Will I have any isues?
Anyone?
Sure you can. If it doesn't work you can always revert back.

Rooting from KK or LP, does it matter?

Hello, my S5 is currently stock unrooted on KK 4.4.4 ANK7 and lately I've been thinking on rooting. However I have a concern if it matter whether you root from Kitkat or Lollipop? Meaning are there any differences that affect rooting depending on what version of Android you're coming from? If I take the LP ota update and then root, would I be able to flash KK roms or just LP roms?
Never, under any circumstances, take an OTA update. Once you take an upgrade to Lollipop, you're stuck with it forever. If you instead root KK and flash a safe Lollipop ROM that doesn't update the bootloader past BOD5, you can still downgrade to KK easily.
It's easier to stick with what you have, root it, and then flash a rooted Lollipop ROM. Lollipop is now rootable, but the root process is a little hit-or-miss. Rooting KK is painless.
I had success using this KK root method: http://forum.xda-developers.com/showthread.php?t=2784880
CAUTION: The BOD5 bootloader is the last one that will allow you to downgrade back to KK. If you ever flash anything that has a BOE1, BOG5, or BOK3 bootloader, you can never go back.
You won't use these for the KK root process, but you'll need them later so save them: you want to ONLY flash these latest safe kernels and/or firmwares by jrkruse: http://forum.xda-developers.com/showpost.php?p=64744448&postcount=2

Rooting and unlocking MM

Will the exploit "Working Root Method For 5.0 Lollipop Roms [OE1] [OG5] [OK3] [PB1] [3-3-16]" work on Marshmallow after getting the MM ota (flashed stock G900VBPB1 prior to downloading)
No. Attempting it will most likely softbrick your device, and possibly hardbrick.
diver47591 said:
Will the exploit "Working Root Method For 5.0 Lollipop Roms [OE1] [OG5] [OK3] [PB1] [3-3-16]" work on Marshmallow after getting the MM ota (flashed stock G900VBPB1 prior to downloading)
Click to expand...
Click to collapse
Nandr0idC0nsumer is correct, but you still can get root on MM even after having taken the OTA. However you will need to flash back to PB1, root PB1, then unlock the PB1 bootloader; after which you will need to do the MM bootloader Unlock and root method, http://forum.xda-developers.com/ver...t/rd-unlocking-galaxys-s5-bootloader-t3337909

From Nougat to MM for recovery

I have Custom ROM stock nougat
Can I install only the MM bootloader, do full wipe, and install a custom MM ROM, just for recovery?
Downgrade for recovery?
I'm confused about what you want to achieve, are you asking if you can downgrade to stock marshmallow from stock Nougat, to flash a custom marshmallow ROM?
If so, you could downgrade, but I would strongly recommend not using OTA updates on the stock marshmallow ROM if you downgrade, else you may hard brick your device. In most cases, you can't downgrade the bootloader in fastboot.
I'm not sure what you are asking for about recovery, can you elaborate?
echo92 said:
I'm confused about what you want to achieve, are you asking if you can downgrade to stock marshmallow from stock Nougat, to flash a custom marshmallow ROM?
If so, you could downgrade, but I would strongly recommend not using OTA updates on the stock marshmallow ROM if you downgrade, else you may hard brick your device. In most cases, you can't downgrade the bootloader in fastboot.
I'm not sure what you are asking for about recovery, can you elaborate?
Click to expand...
Click to collapse
if I want to return to MM
my logic card is in poor condition, in the part of the load center, I can no longer connect the moto g4 by PC
camcho1 said:
if I want to return to MM
my logic card is in poor condition, in the part of the load center, I can no longer connect the moto g4 by PC
Click to expand...
Click to collapse
You can even stay on nougat firmware, there's no need to downgrade as nougat is official released and available for all countries

Downgrade to 5.1 lollipop

If i use twrp to flash device back from nougat to lollipop (stock), will be any chance in a future to install original updates (OTA?)
No!
How to do it? I have official Nougat. I've unlocked bootloader and installed twrp.
I've tried twrp, but can not find debloated flash rom. Some of guys are making downgrade with fastboot over youtube, but they downgrade back only previous version of android, for example from nougat to marshmallow, or from marchmallow to lollipop.
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What will happen, if i try with fastboot way? Will I brick the phone?

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