Database Users

[Q] downgrade stock firmware

it is possible to downgrade the firmware from MGA (CSC I9505ITVBMH1) in MDF (CSC I9505ITVAMD8) with odin?

If you simply reflash your desired firmware using odin...I think it won't be an issue....but sometimes the phone gets stuck on the bootloop....then you need to boot to recovery mode and wipe data and cache...then everything will be ok...as long as you flash the correct firmware for the correct phone you'll be fine

DexterJack said:
it is possible to downgrade the firmware from MGA (CSC I9505ITVBMH1) in MDF (CSC I9505ITVAMD8) with odin?
Click to expand...
Click to collapse
Look here for the Odin flashable CSC file http://forum.xda-developers.com/showthread.php?t=2250824, or first select ITV with CSC Changer from Play (need root).

[Q] trying to revert sm-n900a to stock.

Wassup guys, ive been searching the forum for going on three days now trying to revert back to stock. i keep getting fails through Odin 3.09 and 3.07. Crazy thing is that i have a baseband of mj5 and a build number of mi9. Im on my last nerve with this. Had the phone since Oct. and love it to death. But right now im ready to take it out and practice shooting. Im a fairly knowledgeable with odin and flashing in recovery but this has me at a stand still. Any help as soon as possible would be greatly appreciated. I have downloaded the MI9 files for odin (BL, AP,CP,CSC,PIT) for MJ5 i have (BL,AP,CP,PIT). If im missing some files or doing something wrong a link to a good tutorial would help. Thanks
Just tried flashing mI9 firmware in download mode and got SW REV CHECK: (sbl1) fused2> binary 1
did the whole *#1234# and got AP Mj5 and CP MI9

Confusing.
Be more clear instead of shooting the phone.
What custom rom you were on, if i understand you correct? Android version and your firmware?

kenny1991 said:
Confusing.
Be more clear instead of shooting the phone.
What custom rom you were on, if i understand you correct? Android version and your firmware?
Click to expand...
Click to collapse
No custom rom, 4.3 Baseband says MJ5. Build number says MI9. i dont know if they are supposed to be the same. I was rooted and unrooted. Just trying to get it back to days 1, fresh out the box, Bone stock.
Ok i did the *#1234# now my AP is N900AUCUBMI9,
CP is N900AUCUBMJ5,
and my CSC is N900AATTBMI9.
this is confusing the hell outta me. in the earlier post i didnt have a CSC. only the AP and CP.

Flash a newer firmware or same as your last firmware. I assume you can't downgrade to the original firmware if you have updated once to a newer one as bootloader gets locked.
Or flash 4.4.2 with Odin 1.85

kenny1991 said:
Flash a newer firmware or same as your last firmware. I assume you can't downgrade to the original firmware if you have updated once to a newer one as bootloader gets locked.
Or flash 4.4.2 with Odin 1.85
Click to expand...
Click to collapse
I have tried that also. I dld the N900AUCECMLG.zip for the phone but when i unzip it im at a loss for what to do with the files. i dont know if it should be done in recovery or what files to use with odin. I dont see any tar or md5 files.

You have [email protected]? If so this is the correct firmware for you.
http://www.sammobile.com/firmwares/3/?download=25106
From there you can see instructions to how to flash. Read carefully. Don't panic.
Download rom. And use e.g winrar ro open just once when the files are downloaded. You are extracting twice and stop doing so. Open onse and drag and drop files to your e.g desktop. Once you do this you get md5.
You put the phone into download mode when flashing firmware. Turn it off. Volum down+home+power button at same time when asked if you want to continue press Volum up. Then you are in download mode.
Why do you even flash anything if you can't basics. Read more. If you still can't do this all before attempt or ask a friend to do it for you.

Help please fast

Hey guys,
I installed xtrestolite on my G900F and changed the bootloader and modem of my device before installing it. First problem i had was with CSC. It is a single CSC and i couldn't install my countries CSC on it. That's why i went back to stock. I installed Kit Kat firmware that i downloaded from sammobile and then changed CSC to my countries CSC. Then i updated firmware to lollipop using Kies3. But installing stock rom didn't change bootloader version or modem version. Now i have kitkat bootloader version, kitkat baseband version and lollipop firmware version all different and i want to them all to be the same(latest lollipop). Is there any way to do this without downloading stock rom from sammobile again ? And if not, then can i just put the tar.md5 file that i will download from sammobile in bootloader, pda and CP at the same time and install with odin ?
Thanks in advance !

You do not need to re-download or re-install your ROM. You need to download your bootloader and radio from somewhere, then flash those with ODIN.
Just an FYI, the modem doesn't always like to stick so you may need to flash (auto-reboot disabled), pull the battery after odin says "success", then flash again immediately.

Sean89us said:
You do not need to re-download or re-install your ROM. You need to download your bootloader and radio from somewhere, then flash those with ODIN.
Just an FYI, the modem doesn't always like to stick so you may need to flash (auto-reboot disabled), pull the battery after odin says "success", then flash again immediately.
Click to expand...
Click to collapse
Hey thanks for the tip ! I just downloaded stock firmware but i don't know how to extract bootloader and modem from tar.md5 file and then make them odin flashable. I uploaded image with all the files that are in my tar.md5 file. What of these are for bootloader and what for modem and how do i make them odin flashable later ?
Thanks in advance

SM-A310F Downgrade from 6.0.1 to 5.1.1

Hi XDA community, i want try to downgrade in my A310f from Android 6.0.1 to 5.1.1. It's possible? I try to download the 5.1.1 from Sammobile, but when i flash the firmware with odin i get the error "SW Rev Check Fail" in my phone and "md5 error" from odin.. there are some method?

MMBB29K.A310FXXU3BQC2 is my model. Tell me please here

allenbtc said:
MMBB29K.A310FXXU3BQC2 is my model. Tell me please here
Click to expand...
Click to collapse
If your bootloader also is upgraded to A310FXXU3 then it won't be possible to downgrade to 5.1.1 through odin.
Maybe with a modified package without cm.bin, modem.bin, sboot.bin. Otherwise, make it flashable and use twrp.
With Odin you'll only be able to downgrade to the latest 6.0.1 which is also A310FXXU3.

how i can flash with twrp?
---------- Post added at 02:02 PM ---------- Previous post was at 01:57 PM ----------
tys0n said:
If your bootloader also is upgraded to A310FXXU3 then it won't be possible to downgrade to 5.1.1 through odin.
Maybe with a modified package without cm.bin, modem.bin, sboot.bin. Otherwise, make it flashable and use twrp.
With Odin you'll only be able to downgrade to the latest 6.0.1 which is also A310FXXU3.
Click to expand...
Click to collapse
how i can flash with twrp?

tys0n said:
If your bootloader also is upgraded to A310FXXU3 then it won't be possible to downgrade to 5.1.1 through odin.
Maybe with a modified package without cm.bin, modem.bin, sboot.bin. Otherwise, make it flashable and use twrp.
With Odin you'll only be able to downgrade to the latest 6.0.1 which is also A310FXXU3.
Click to expand...
Click to collapse
I can confirm this method is working, I have successfully downgraded an A3 2016 from A310FXXU3BQD2 to A310FXXU2BQA3.
I used the Tar tool from this thread with all the files from the update I wanted to downgrade to, except sboot.bin, cm.bin and modem.bin. It's very important to NOT copy those files to the tool folder because otherwise your phone will be laggy and SIM unusable (if you use the old modem) or you will not be able to flash like with the original tar (if you use old sboot or cm).
So after I ran the batch file, I did a wipe data/factory reset using original recovery and then I flashed the "all files" tar the tool created using Odin in AP (only Auto Reboot and F. reset time checked) and the phone in download mode, and It worked like a charm.
With this method you can likely have any old update flashed while keeping the latest secure bootloader, cm and modem. (Notice that after the downgrade, the phone cannot find any new updates, maybe it's related to the bootloader being the latest or the fact I only downgraded to the previous update...)

dealth645 said:
I can confirm this method is working, I have successfully downgraded an A3 2016 from A310FXXU3BQD2 to A310FXXU2BQA3.
I used the Tar tool from this thread with all the files from the update I wanted to downgrade to, except sboot.bin, cm.bin and modem.bin. It's very important to NOT copy those files to the tool folder because otherwise your phone will be laggy and SIM unusable (if you use the old modem) or you will not be able to flash like with the original tar (if you use old sboot or cm).
So after I ran the batch file, I did a wipe data/factory reset using original recovery and then I flashed the "all files" tar the tool created using Odin in AP (only Auto Reboot and F. reset time checked) and the phone in download mode, and It worked like a charm.
With this method you can likely have any old update flashed while keeping the latest secure bootloader, cm and modem. (Notice that after the downgrade, the phone cannot find any new updates, maybe it's related to the bootloader being the latest or the fact I only downgraded to the previous update...)
Click to expand...
Click to collapse
Thanks for confirming. I've never tried it myself but I figured those bins are the U1/U2/U3 binary files that are protected for downgrade, so it should probably work without them
Now we know how to easily downgrade without errors.

Downgrade
Hello,
With my sm-a310f I downgraded from Nougat to Marchmallow but could not get back to Lollipop.
I used TWRP and Odin.
I saw that there were solutions but they are not universal. Can someone point me?
Thank you

menuisier3 said:
Hello,
With my sm-a310f I downgraded from Nougat to Marchmallow but could not get back to Lollipop.
I used TWRP and Odin.
I saw that there were solutions but they are not universal. Can someone point me?
Thank you
Click to expand...
Click to collapse
https://forum.xda-developers.com/samsung-a-series/general/rom-t3614602

flash combination rom before flash full 4 file stock rom 5.1 , u can downgrade your phone.

Tanle11 said:
flash combination rom before flash full 4 file stock rom 5.1 , u can downgrade your phone.
Click to expand...
Click to collapse
No! You can't downgrade bootloader even if you use a 4 file repair firmware.

As far as I am aware of, this is the only possible way to downgrade to 5.1.1 if you are on new bootloader/modem (tested by me - works fine, I am on the newer bootloader/modem combo) :
https://forum.xda-developers.com/samsung-a-series/general/rom-t3614602
(consider this however ONLY if you are willing to trade 5.1.1 for the warranty as you would need to flash TWRP in the process first)

Flashing stock firmware with TWRP?

Hey guys, I was wondering if there is a way to flash stock firmware for the s6 tab lite without a computer? I don't have access to mine at the moment, and my tablet currently has lineageOS with root and twrp on it. The firmware that I downloaded seems to only be compatible with Odin, any insight would be greatly appreciated!

With TWRP you can only flash a Customrom.
Have you create a Backup oft the Stockrom before you flashed the Customrom ?
If yes , so you can restore this.

bierma32 said:
With TWRP you can only flash a Customrom.
Have you create a Backup oft the Stockrom before you flashed the Customrom ?
If yes , so you can restore this.
Click to expand...
Click to collapse
According to Magendaz, one can flash kernel, firmware, and custom ROM with TWRP.

I realize I didn't read the thread correctly, I apologize. My post is for using odin
-------
I wanted to root the device, but changed my mind after learning you can't be in stock firmware and have twrp/root at the same time (please correct me on this since I was having trouble trying to root my device via TWRP since I was stuck on recovery when trying to boot into system with bootloader and OEM Unlocking enabled; I assume I bricked the tablet somehow).
If you haven't created a backup like I did, you have to use ODIN to flash to the stock firmware. Here's how I got it done:
Download the firmware via: https://samfw.com/firmware/SM-P610/XAR/P610XXU2BTK2 or whichever website has the stock firmware
Look into the region code (CSC) your device has. XAR is the firmware region for the United States. I wasn't able to tell which region code I had since I correctly guessed
Insert the first 3 files to ODIN (AP, BL, CSC) and Start
https://imgur.com/pvOcPmy
I was a bit worried that there is no CL file at first but I assume that's only for LTE (
https://www.reddit.com/r/samsung/comments/99f1w2/_/e4n63ue
)
Hope this helps

Pancake Dressing said:
I realize I didn't read the thread correctly, I apologize. My post is for using odin
-------
I wanted to root the device, but changed my mind after learning you can't be in stock firmware and have twrp/root at the same time (please correct me on this since I was having trouble trying to root my device via TWRP since I was stuck on recovery when trying to boot into system with bootloader and OEM Unlocking enabled; I assume I bricked the tablet somehow).
If you haven't created a backup like I did, you have to use ODIN to flash to the stock firmware. Here's how I got it done:
Download the firmware via: https://samfw.com/firmware/SM-P610/XAR/P610XXU2BTK2 or whichever website has the stock firmware
Look into the region code (CSC) your device has. XAR is the firmware region for the United States. I wasn't able to tell which region code I had since I correctly guessed
Insert the first 3 files to ODIN (AP, BL, CSC) and Start
https://imgur.com/pvOcPmy
I was a bit worried that there is no CL file at first but I assume that's only for LTE (
https://www.reddit.com/r/samsung/comments/99f1w2/_/e4n63ue
)
Hope this helps
Click to expand...
Click to collapse
I am unable to connect the device to odin, and ideas of what I could be missing?
EDIT: I wasn't in the correct mode.

Pancake Dressing said:
I realize I didn't read the thread correctly, I apologize. My post is for using odin
-------
I wanted to root the device, but changed my mind after learning you can't be in stock firmware and have twrp/root at the same time (please correct me on this since I was having trouble trying to root my device via TWRP since I was stuck on recovery when trying to boot into system with bootloader and OEM Unlocking enabled; I assume I bricked the tablet somehow).
If you haven't created a backup like I did, you have to use ODIN to flash to the stock firmware. Here's how I got it done:
Download the firmware via: https://samfw.com/firmware/SM-P610/XAR/P610XXU2BTK2 or whichever website has the stock firmware
Look into the region code (CSC) your device has. XAR is the firmware region for the United States. I wasn't able to tell which region code I had since I correctly guessed
Insert the first 3 files to ODIN (AP, BL, CSC) and Start
https://imgur.com/pvOcPmy
I was a bit worried that there is no CL file at first but I assume that's only for LTE (
https://www.reddit.com/r/samsung/comments/99f1w2/_/e4n63ue
)
Hope this helps
Click to expand...
Click to collapse
Do i still insert the CP file even if i have it?