Help downgrading Marshmallow to Lollipop - Android Q&A, Help & Troubleshooting

hey there! I have a Samsung Galaxy S5 neo G390W on 6.0.1 Marshmallow. This is not my primary phone, but I would like it to be in its first OS my phone provider had it in which is Lollipop, but it always goes in a boot loop. I reflash it with Odin 3.10 back to Marshmallow, and it is just fine. I would like to have this phone on Lollipop, and my S7 Edge on Marshmallow. Is there any way you guys can help me with my boot loop problem??? Thanks!

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S6 Edge SM-G925S Recent Keys NOT WORKING!!!

HI Everyone..
Anyone who can tell me why it's not working.. I think there's something like a program that's making this happen. I did a full wipe out already and still not working. I think this is because of that Samsung VR update.
My OS is currently on Android 6.0 marshmallow.

s6 edge freeze and random reboot problem

my s6 edge sm-g925F had a random freeze and reboot problem after the last MM 6.0.1 update
it comes randomly
I tried to downgrade to lolli 5.1.1 but didn't work
also tried to flash stock MM 6.0.1 downloaded form sammobile but didn't work (by odin and machine)
then flashed another kernals custom and official
nothing works
anyone has solution ?
no solution ?
seems no solution for this problem ?

Galaxy S6 Edge G925X live demo unit rom flash fail odin

Hello. I have a samsung galaxy s6 edge g925x (live demo unit) . I wanted to write it official 6.0.1 rom marshmallow intended for g952f but odin shows fail . Now I have installed rom 5.1.1 of this page: http://forum.xda-developers.com/galaxy-s6/general/g920x-master-thread-guides-firmwares-t3267738 .
I would really like marshmallow . Please help. I'll be very grateful if you help Regards
Robert PruszyƄski said:
Hello. I have a samsung galaxy s6 edge g925x (live demo unit) . I wanted to write it official 6.0.1 rom marshmallow intended for g952f but odin shows fail . Now I have installed rom 5.1.1 of this page: http://forum.xda-developers.com/galaxy-s6/general/g920x-master-thread-guides-firmwares-t3267738 .
I would really like marshmallow . Please help. I'll be very grateful if you help Regards
Click to expand...
Click to collapse
Sorry for bumping this old thread...
if you or someone is still interested in flashing marshmallow rom, I have a working stock marshmallow rom for g928x LDU
I am uploading the files necessary for this.
PM me for instructions...
Need Rom
ng1nx02 said:
Sorry for bumping this old thread...
if you or someone is still interested in flashing marshmallow rom, I have a working stock marshmallow rom for g928x LDU
I am uploading the files necessary for this.
PM me for instructions...
Click to expand...
Click to collapse
Thank god.
I do need that rom , i have an stock 5.1.1 LDU S6 edge but it have some problems with this actual rom :
- Battery Does not Charge up to 84% So far
i've Changed Battery and nothing it does NOT charge to 100%
- Some Stuff Doesn't work Correctly Like Mirroring
- The Phone heats up like a kitchen.
if you Have an 925X rom Working marshmallow i'll thank you.
JagoTh said:
Thank god.
I do need that rom , i have an stock 5.1.1 LDU S6 edge but it have some problems with this actual rom :
- Battery Does not Charge up to 84% So far
i've Changed Battery and nothing it does NOT charge to 100%
- Some Stuff Doesn't work Correctly Like Mirroring
- The Phone heats up like a kitchen.
if you Have an 925X rom Working marshmallow i'll thank you.
Click to expand...
Click to collapse
I only have the G928X variant sir, you can google the g925x marshmallow rom, and there's even android Pie for it

how to install CM12 Samsung galaxy j5

Hi
I updated my samsung galaxy j5 (j500-FN) to android 6.0.1. I want to install cm12 (or 13 if possible) for my phone. I know how but im just not shure if i need to downgrade to android 5.1.1 to install CM12. Is it necessarry or can i just install it with 6.0.1. And if needed how can i downgrade to android 5.1.1. I tried it several times (download stock firmware, flash it...) but i just end up bricking my phone.
Kind regards
Brent
@bcoudi what brick, please be specific with your problem. Tell me about status of your device so that I can help you and guide you properly,
So the brick isn't really the problem, i fixed it. But i don't know what causes the brick. Is it because i'm trying to run cm12 on android 6.0? Or maybe something else
Downgrade to 5.1.1 is necessary because the baseband of cm12 is lollipop
Sent from my SM-J500F using Tapatalk
Instructions on how to do this correctly? Because every time i try i brick my phone

Needing help getting a custom ROM on this phone

Hello,
Yes, I know this phone is old and I'm hoping someone will help me but I have a Motorola Droid Turbo 2 and the battery is about to go bad and I also broke me MicroUSB port so I have to wirelessly charge it. I want to go back to my Samsung Galaxy S4 which it's on Android 5.0.1.
Before I got this Samsung Galaxy S4 had the same phone but I broke the LCD when I went to replace the screen which it ran Android 4.4.4, it was rooted, and had the SafeStrap custom recovery on it. This Samsung Galaxy S4 is on Android 5.0.1 and I saw a custom ROM that can make the phone run on Android 7.1 or Oreo so I want to do that to get the phone almost up-to-date close to my Motorola Droid Turbo 2.
I rooted using Kingroot so the first question is how to make SuperSU the main root permission.
I tried to use TWRP but it mess the stock recovery up so now it goes to Odin mode, the second question is how can I get a custom recovery to unlock the bootloader.
Lastly, what is the best ROM, I see the CM is nothing anymore and I saw a ROM called "LineageOS 14.1" which run Android 7.1.1, so the ROM I like to see haves at least Android 6 or newer and if there isn't any then what is the best Android 5.0 ROM.
--Here is the Phone info---
Model number: SCH-I545
Android version: Android 5.0.1
Baseband version: I545VRSGPL1
Kernel version 3.40
Build number: LRX22C.I545VRSGPL1
Keep in mind I'm little rust on rooting and custom ROM. I haven't done a custom ROM since the Droid 1 days. Please make it noob friendly as possible. I'm using a Linux OS right now but if I need a Windows OS I got one.
Thank you!
TheLamerAndroid said:
Hello,
Yes, I know this phone is old and I'm hoping someone will help me but I have a Motorola Droid Turbo 2 and the battery is about to go bad and I also broke me MicroUSB port so I have to wirelessly charge it. I want to go back to my Samsung Galaxy S4 which it's on Android 5.0.1.
Before I got this Samsung Galaxy S4 had the same phone but I broke the LCD when I went to replace the screen which it ran Android 4.4.4, it was rooted, and had the SafeStrap custom recovery on it. This Samsung Galaxy S4 is on Android 5.0.1 and I saw a custom ROM that can make the phone run on Android 7.1 or Oreo so I want to do that to get the phone almost up-to-date close to my Motorola Droid Turbo 2.
I rooted using Kingroot so the first question is how to make SuperSU the main root permission.
I tried to use TWRP but it mess the stock recovery up so now it goes to Odin mode, the second question is how can I get a custom recovery to unlock the bootloader.
Lastly, what is the best ROM, I see the CM is nothing anymore and I saw a ROM called "LineageOS 14.1" which run Android 7.1.1, so the ROM I like to see haves at least Android 6 or newer and if there isn't any then what is the best Android 5.0 ROM.
--Here is the Phone info---
Model number: SCH-I545
Android version: Android 5.0.1
Baseband version: I545VRSGPL1
Kernel version 3.40
Build number: LRX22C.I545VRSGPL1
Keep in mind I'm little rust on rooting and custom ROM. I haven't done a custom ROM since the Droid 1 days. Please make it noob friendly as possible. I'm using a Linux OS right now but if I need a Windows OS I got one.
Thank you!
Click to expand...
Click to collapse
You're stuck on 5.0.1. forget about upgrading past 5.0.1. not going to happen. Ever.
Sent from my [device_name] using XDA-Developers Legacy app
Only the MDK bootloader can boot ROMS based on Android 6, 7, 8, etc. Once you've updated past MDK, you can't go back.

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