I have a faulty android 10 security level S7 (very recent) flashed on my device. Can I flash older versions of combination files on my device?
Galaxy S10+
This thread might help you:
https://forum.xda-developers.com/s10-plus/how-to/flashing-combination-file-to-s10-10-t4053059
Related
how to degrade, s7 edge G935U ROM G935UUEU9CSA3 androi 8.0.0 to G935UUEU4BQD2 android 7.0, without that odin error of boot v9 binare 1.
please help ... that android 8.0.0 I spent a lot of battery
If you could pop it open and directly connect to the flash memory, you should be able to directly overwrite everything. An older motherboard that hasn't been updated is another option. I'm sure $1500-$2000 might also get someone to come up off an engineering build without the revision check.
Those are my only ideas. The last one there about revision checks is best option without opening the device. I had engineering firmware for the note 5 that let me downgrade the bootloader to an older revision. I could have almost done a full on complete downgrade from revision 3 to revision 2 except for "param.bin". Download Mode itself was the only thing not downgrade-able in that instance.
My device is Samsung Galaxy j5 2017 Pro Dual Sim.
Right now I am on pie,one ui. I would like to go back to oreo since performance was,at least for me,so much better and i had more control of camera beacuse the app was better. Problem is now that my bootloader is V6 but all of the oreo firmwares are on V5. Is there ANY way to go back or am I stuck.
Maybe combining files,flashing oreo without bootloader md5 selected in odin?
You will have to extract the Oreo stock firmware and flash bootloader and modem using Odin.
Not as straightforward as it sounds either.
If I get time after work (yes I'm one of the unlucky ones still working in this mayhem) I'll have a look at it and try extract the files for you
Hi, my phone is a samsung galaxy J5 J530F 2017 dual sim. I updated my phone to ANDROID 9 (PIE) and I'm unhappy with the update. When I want to update back to Android 7 via odin, it ends with a FAIL error right at the beginning of the update. I managed to return to Android 7 with a backup I created via TWRP on Android 7, but the phone no longer runs smoothly and sometimes freezes. Is there any way I can get back to Android 7? I would be very grateful. Thank you.
garylawwd said:
You will have to extract the Oreo stock firmware and flash bootloader and modem using Odin.
Not as straightforward as it sounds either.
If I get time after work (yes I'm one of the unlucky ones still working in this mayhem) I'll have a look at it and try extract the files for you
Click to expand...
Click to collapse
Hey, I'm interested on this topic too, were you able to extract the files to do the downgrade?
I have my reasons for wanting a device that runs Android 7, but can that subsequently be upgraded to Android 8 (and above), and I am thinking that a second hand Galaxy S8 might do the job.
However, since I am looking at second hand phones, there is no guarantee that it would actually be on Android 7 (unless the online shop is willing to check for me), and I am just wondering if, in the instance where the phone comes with Android 8 or above, would I be able to flash it back to Android 7, or would it be dependent on bootloader version. And if it is bootloader version dependant, which version would allow me to downgrade back to Android 7?
Thanks.
xAxB said:
I have my reasons for wanting a device that runs Android 7, but can that subsequently be upgraded to Android 8 (and above), and I am thinking that a second hand Galaxy S8 might do the job.
However, since I am looking at second hand phones, there is no guarantee that it would actually be on Android 7 (unless the online shop is willing to check for me), and I am just wondering if, in the instance where the phone comes with Android 8 or above, would I be able to flash it back to Android 7, or would it be dependent on bootloader version. And if it is bootloader version dependant, which version would allow me to downgrade back to Android 7?
Thanks.
Click to expand...
Click to collapse
On the S8 android version 7 has a binary ( bootloader ) version 1. Early version of Oreo has a binary ( bootloader ) 1 as well ie: beta and next few upgrades. I can't remember exactly when the version 2 binary ( bootloader ) was introduced, might have been 3 or 4 version of Oreo before being stable.
If looking for a 2nd phone that can by downgraded to android 7 you will need bl version 1. Anything with bl version 2 and higher can not be downgraded to android version 7.
You can check in settings - about phone - software information - Baseband version. Binary ( bootloader ) number will be the 5th number/letter from the right, you can also check build number as well.
spawnlives said:
On the S8 android version 7 has a binary ( bootloader ) version 1. Early version of Oreo has a binary ( bootloader ) 1 as well ie: beta and next few upgrades. I can't remember exactly when the version 2 binary ( bootloader ) was introduced, might have been 3 or 4 version of Oreo before being stable.
If looking for a 2nd phone that can by downgraded to android 7 you will need bl version 1. Anything with bl version 2 and higher can not be downgraded to android version 7.
You can check in settings - about phone - software information - Baseband version. Binary ( bootloader ) number will be the 5th number/letter from the right, you can also check build number as well.
Click to expand...
Click to collapse
Thanks a lot. Do you know if custom ROMs, for instance Lineage also update the baseband as you go up versions?
The second hand shop I was looking at update everything they sell with the latest available update and I suspect that is common practice. So I am thinking that the best option for me would be to sacrifice the e-fuse on my Samsung S7 with Android 7.0, and start playing with various Android versions / ROMs. However, I may want to go back to Android 7.0 on that phone eventually, so it is important that I don't accidentally mess that up.
xAxB said:
Thanks a lot. Do you know if custom ROMs, for instance Lineage also update the baseband as you go up versions?
The second hand shop I was looking at update everything they sell with the latest available update and I suspect that is common practice. So I am thinking that the best option for me would be to sacrifice the e-fuse on my Samsung S7 with Android 7.0, and start playing with various Android versions / ROMs. However, I may want to go back to Android 7.0 on that phone eventually, so it is important that I don't accidentally mess that up.
Click to expand...
Click to collapse
I normally use stock rom's as some of my apps don't work well with custom roms. Usually the only time that i've installed a custom roms is if someone else is having trouble with the installation process then i revert back to stock.
The Baseband ( in about phone ) will always show the current version of the OS whether it's stock or custom that you are on ( including updates ).
As far as i know custom roms do not increase you bootloader version number. So you should be able to revert back to the current stock rom that your on. You can always check bootloader version in Download ( odin ) Mode.
If you have any questions you should ask in the custom roms section for more information.
Hi!
Does anyone know where I can find the T387AAUCS3CUD1 stock ROM? I'm trying to fix a unit that I may have messed up by tinkering with custom ROMs.
Anyone?
Still nothing?
Hi also searching high and low for T387AAUCS3CUD1.
Any success finding it?
Samsung Galaxy Tab A (T387AA) - Software Update for the Samsung Galaxy Tab A (T387AA) - AT&T
Get Samsung Galaxy Tab A (T387AA) support for the topic: Software Update for the Samsung Galaxy Tab A (T387AA). Find more step-by-step device tutorials on att.com.
www.att.com
ATT is worthless - no support. OTA Android 8 won't update to Android 10. Says already current.
No luck yet :-(
Still no luck.
Someone recently gave me a SM-T387AA, came across this thread while looking for the latest firmware for the device. It does appear that T387AAUCS3CUD1 is the latest for the AA version, which I also was unable to locate. (probably because ATT uses their own servers for firmware instead of samsung) However, while searching, I also came across a newer version of firmware for SM-T387W.
Specifically:
AP VERSION T387WVLS3CVK2
CSC VERSION T387WOYV3CVK2
CSC VTR (Canada)
ANDROID VERSION Q(Android 10)
SIZE 2.62 GB Full Files
MD5 d3b07faf990e6b33b55f5f39839799e4
BUILD DATE 20221114152111
SECURITY PATCH LEVEL 2022-06-01
To my surprise, I flashed the 387W firmware on my 387AA with ODIN and everything seems to be working just fine. Still can't unlock my bootloader though. I see there's also a 387R4 variant. I might try that next, and will report back if I do.
Would this not though prevent a user from being able to use it on AT&T?
scythe000 said:
Would this not though prevent a user from being able to use it on AT&T?
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Click to collapse
I popped in an ATT sim and calls/txt appear to be working.
Oh interesting, I wonder what the difference between the two firmware versions are then?
javadahut said:
Someone recently gave me a SM-T387AA, came across this thread while looking for the latest firmware for the device. It does appear that T387AAUCS3CUD1 is the latest for the AA version, which I also was unable to locate. (probably because ATT uses their own servers for firmware instead of samsung) However, while searching, I also came across a newer version of firmware for SM-T387W.
Specifically:
AP VERSION T387WVLS3CVK2
CSC VERSION T387WOYV3CVK2
CSC VTR (Canada)
ANDROID VERSION Q(Android 10)
SIZE 2.62 GB Full Files
MD5 d3b07faf990e6b33b55f5f39839799e4
BUILD DATE 20221114152111
SECURITY PATCH LEVEL 2022-06-01
To my surprise, I flashed the 387W firmware on my 387AA with ODIN and everything seems to be working just fine. Still can't unlock my bootloader though. I see there's also a 387R4 variant. I might try that next, and will report back if I do.
Click to expand...
Click to collapse
Got a link to where we can download it?
scythe000 said:
Got a link to where we can download it?
Click to expand...
Click to collapse
I used Bifrost. It can pull the latest firmware for most samsung devices that are hosted on samsung servers. Type in the model, "SM-T387W" and the CSC, "VTR", check for update and then download.
Bifrost link: https://github.com/zacharee/SamloaderKotlin
Hallo all!
I have a Samsung S8 that the hardware is SM-G950W (Canadian) and I flashed it to SM-950U (USA) and I eventually want to downgrade it to Android 7 from Android 9 with U8 bootloader.
Problem is I have found a combination file that has the U8 bootloader and Android 7 and the factory Android 7 ROM (Original) but the factory ROM only gets to U5 bootloader if I remember correctly, or perhaps U2 it was.
My idea is to take the bootloader files out of the Android 7 U8 combination files and make them work in place of the Android 7 factory ROM bootloader files. So I wondered what files in a ROM or combination file would I need to swap out? Will this work on a Galaxy S8 with a never unlocked bootloader?
Is this a good idea to try? I also thought to take Android 9 bootloader files and decompress their .lz4 extensions and swap them but I kind of dont think that thats a smart idea as differing Android versions are more likely to differ in unforseen ways. Android 7 doesnt use .lz4 compressed files where Android 9 does.
Any help? This is the only way I can foresee myself using my hardware my way. Thanks.