Firmware, CSC and Samsung - General Questions and Answers

Hello, I wanted to ask a few questions
After a firmware flash with XPG CSC code for example is it possible to change the CSC code to THL and vice versa?
Is there really any way to lower firmware to a lower version?
If so, what file / path do I need to do this?
what is the differences between OXA and OXM?
Is there a place where you can read about the new changes that Samsung has made in recent years in terms of security that can not flash firmware to an older version and can not change CSC codes?
I know how to root a phone and use ADB (ADB in a very basic way)
Thanks!

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This post has some information
Fail to flash with odin to downgrade from android 10
About a year ago, I downloaded firmware for N960F from updato and downgraded from Pie to Oreo using Odin and it went all so well. This time around I'm trying to downgrade from Android 10 to the exact same firmware version I used back then, just...
forum.xda-developers.com
But since about the s8-s9 days Samsung implimented anti rollback , wich are not so clear , some phones cand downgrade to a previous version and some dont due the firmware setting the minimun version bar higher so to speak .
Wich model are you trying to downgrade?

Related

Lost root G930F

Hey guys, i woke up yesterday with no root access on my GS7 outta the blue, it's been working fine earlier until now, i tried to reflash the cf auto root by chainfire again and again and it seems that root would not install on my phone.
Please is there any solution or an updated version for cf auto root to fix this problem ?
Yes, this seems to be a widespread problem. See these threads:
http://forum.xda-developers.com/s7-edge/help/lost-root-samsung-galaxy-s7-edge-t3378618/page2
http://forum.xda-developers.com/s7-edge/development/sm-g935-exynos-cf-auto-root-t3337354/page41
Hopefully Chainfire can fix CF-Autoroot soon. If anyone has a way to easily ping him please do that.
For now I'm going to just hunker down and wait for a fix before starting from scratch.
i just noticed this myself, disabled security updates but no permissions to flash the binary... weird
i have lost root too, suddenly i cant log in to TB.
any ideas?
Not sure what versions you are using or if this will help but I had issues with 2.71 I have had none with 2.68
For those who lost root on the G930F, see my post in this thread for a process to restore root:
http://forum.xda-developers.com/galaxy-s7/development/sm-g930-exynos-cf-auto-root-t3337353/page22
Chainfire explains the background behind the loss of root here and the updates he did to CF Autoroot to address the loss of root issue:
https://plus.google.com/+Chainfire/posts/XMFgencRR11
on what build are you
re
Hi i'm on Samsung S7 Flat also.
I've tried searching threads on how to do it but i was unable to find the exact firmware with the same CSC version for my device.
I'm afraid that i could have my phone bricked if i flashed the firmware having different CSC version.
Can anybody give me a hand to fix this? I'm attaching all my phones info for details.
By the way i rooted my phone using CF root and lost it probably because of Samsung's Security Update.
PDA Version: G930FXXU1APD1
Bootloader Version: G930FXXU1APD1
CSC Version: G930FOLB1APD3
Thanks!
racandroll said:
Hi i'm on Samsung S7 Flat also.
I've tried searching threads on how to do it but i was unable to find the exact firmware with the same CSC version for my device.
I'm afraid that i could have my phone bricked if i flashed the firmware having different CSC version.
Can anybody give me a hand to fix this? I'm attaching all my phones info for details.
By the way i rooted my phone using CF root and lost it probably because of Samsung's Security Update.
PDA Version: G930FXXU1APD1
Bootloader Version: G930FXXU1APD1
CSC Version: G930FOLB1APD3
Thanks!
Click to expand...
Click to collapse
Chainfire indicated that you only really need to match the PDA firmware version, and as he's the one behind CF Autoroot you should probably take his word on that. See here:
http://forum.xda-developers.com/showpost.php?p=66937745&postcount=222
So you should be fine if you download a firmware zip file with that PDA firmware version (regardless of the CSC firmware version and country code) and extract the boot.img from that and then follow the remaining steps I posted here:
http://forum.xda-developers.com/showthread.php?p=66934553#post66934553
I downloaded my exact firmware (PDA Firmware Version, CSC Firmware Version and Country Code) out of an abundance of caution, but probably would have been fine just downloading a firmware zip file that just had the same PDA firmware version.
For the previous poster who asked, my build number is MMB29K.G930FXXU1APB4

[Completed] Galaxy S6 (SM-G920F) Android 6.01 Root and Media Recovery Help

Phone: Galaxy S6 SM-G920F No carrier
Firmware/Base Band: G920FXXS4DPJ2
Kernel Version: 3.10.61-882157 [email protected] #1
Compilation number: MMB29K.G920FXXS4DPJ2
Running Official Rom
A girl deleted more than 4000 videos and images I had in my phone, almost all the 128Gb of the phone where full. Now I want to recover them but for some reason almost no Android Recovery Software recognizes my phone properly and when they have, the recovery program freezes or a particular program finds some files but not the ones I'm interested in and asks me to root my phone to be able to perform a better recovery.
The problem is that apparently there is no auto-root or ping-pong root for my Firmware and Android Version. I think the logical solution in this case is to flash a different Firmware, one that can be rooted and then do it and see if I can recover the files.
If I am not mistaken flashing a different Firmware is something that you have to be careful with. I don't know which firmware should I flash to be able to root my phone. I am from Spain and I know SamMobile website where you can find all the Firmwares, but from all the ones from Spain none has and auto-root method.
I am open to installing a Firmware intended for a different country if that means root access to be able to recover my pictures and flash back a Firmware for my country once I recover them. The thing is I don't know which Firmware to Flash nor if it is safe to do it. For example there are severral Android 6.01 based Firmwares for my phone in my country but some are for example 1 month old and others 9 months with many in between. If I had the 1 month old Android 6.01 Firmware would I be able to Flash a 6-9 month old Android 6.01 Firmware or is it dangerous?
Can you reccommend me a specific Firmware that would not brick my phone? and be english language please no Russian, Chinesse or a exotic language, that I would be lost with?
Hi !
You can use any firmware which matches your device variant only if your device is NOT locked on a network , preferable an European version downloadable from samsung firmware website
It doesn`t matter how old it is , you can flash back and forth any firmware available for your device
Good luck !

Galaxy S6 (SM-G920F) Android 6.01 Root and Media Recovery Help, Some questions.

Phone: Galaxy S6 SM-G920F No carrier
Firmware/Base Band: G920FXXS4DPJ2
Kernel Version: 3.10.61-882157 [email protected] #1
Compilation number: MMB29K.G920FXXS4DPJ2
Running Official Rom
Thanks in advance to anyone that helps me with this, I need it.
A girl deleted more than 4000 videos and images I had in my phone, almost all the 128Gb of the phone where full. Now I want to recover them but for some reason almost no Android Recovery Software recognizes my phone properly and when they have, the recovery program freezes or a particular program finds some files but not the ones I'm interested in and asks me to root my phone to be able to perform a better recovery.
The problem is that apparently there is no auto-root or ping-pong root for my Firmware and Android Version. I think the logical solution in this case is to flash a different Firmware, one that can be rooted and then do it and see if I can recover the files.
If I am not mistaken flashing a different Firmware is something that you have to be careful with. I don't know which firmware should I flash to be able to root my phone. I am from Spain and I know SamMobile website where you can find all the Firmwares, but from all the ones from Spain none has and auto-root method.
I am open to installing a Firmware intended for a different country if that means root access to be able to recover my pictures and flash back a Firmware for my country once I recover them. The thing is I don't know which Firmware to Flash nor if it is safe to do it. For example there are severral Android 6.01 based Firmwares for my phone in my country but some are for example 1 month old and others 9 months with many in between. If I had the 1 month old Android 6.01 Firmware would I be able to Flash a 6-9 month old Android 6.01 Firmware or is it dangerous?
Can you reccommend me a specific Firmware that would not brick my phone? and be english language please no Russian, Chinesse or a exotic language, that I would be lost with?

Flashing more recent stock rom from sammobile

Hi
Apologies for what is quite a basic question for I'm just trying to get things straight in my head before proceeding.
I have a UK retail S7 G930F, current running stock
Build G930FXXU1DQC4
Baseband G930FXXU1DQC2
Despite the fact this build only has Android security patch level February 2017, and the latest build is from 2018, my device and Smart Switch insist I am up to date, I want to actually make this the case while remaining on stock firmware.
I have used Odin to flash Galaxy phones before but not since I had a Note 2 and Note 3 so I'm a little rusty.
I have Odin 3.13.1 and the zip download from sammobile for build G930FXXS2DRAA for the same CSC region I'm currently on which is XEU.
All the guides for Odin flashing say to only use the AP file and option in Odin. However as my BL, CP and CSC will all be older as well, and I'm simply going from stock to stock can I (or should I) also flash these parts as well?
Thanks.
I need more information. 6 mm and 7 nougat use the same BL and require no upgrade where if you were on lollipop somehow you would need the bl. Please DO NOT run off and start flashing things like BL without help from here first. I have bricked a samsung device so bad I had to replace the motherboard, so I learned the hard way.
Both current firmware and the one I intend to flash are Android 7, the new one is just a much more recent build with a more up to date security patch level.
My current firmware, as shipped (or possibly updated OTA a long time ago)
https://www.sammobile.com/firmwares/galaxy-s7/SM-G930F/XEU/download/G930FXXU1DQC4/127501/
My intended firmware that I plan to flash
https://www.sammobile.com/firmwares/galaxy-s7/SM-G930F/XEU/download/G930FXXS2DRAA/205600/
Despite the fact that sammobile says the newer one is available in Smart Switch, it doesn't show any updates when I connect my device to my PC with Smart Switch.
y2kgecko said:
Both current firmware and the one I intend to flash are Android 7, the new one is just a much more recent build with a more up to date security patch level.
My current firmware, as shipped (or possibly updated OTA a long time ago)
https://www.sammobile.com/firmwares/galaxy-s7/SM-G930F/XEU/download/G930FXXU1DQC4/127501/
My intended firmware that I plan to flash
https://www.sammobile.com/firmwares/galaxy-s7/SM-G930F/XEU/download/G930FXXS2DRAA/205600/
Despite the fact that sammobile says the newer one is available in Smart Switch, it doesn't show any updates when I connect my device to my PC with Smart Switch.
Click to expand...
Click to collapse
I get that a lot. I upgraded my s7 to latest n release today and it worked ok.
So, do I just flash AP or everything?
y2kgecko said:
So, do I just flash AP or everything?
Click to expand...
Click to collapse
You need to flash all 4 files: BL / AP / CP / CSC
I do recommend that you flash CSC* and not HOME_CSC*. That way you will reset the phone to factory defaults and it will be ready for future OTA updates.
Backup your files first that you think are important and then start from scratch to configure the phone, install your apps, update the ones on the phone.

[N915FY] About downgrading…

Hello,
I would like to downgrade a Galaxy Note Edge (N915FY) to Android Kitkat but I haven't done it in a few years. I wanted to make sure I understood everything before I made any mistakes. I saw on differents topics on XDA that Samsung was preventing to downgrade on their devices since android 5.0.1.
In this case :
Is reinstalling the bootloader of an Kitkat firmware with Odin is enough to reinstall an stock android 4.4 firmware after ?
Did you know where I can find an Android 4.4 bootloader for N915FY (can I extract it from the stock firmware) ?
Did I need to do and tick "Re-Partition" on Odin ?
If I do a re-partition, what PIT file should I use (see on sammobile.com) ? (TBLTE_EUR_OPENBTU_HIDDEN100M.pit or TBLTE_EUR_OPENBTU.pit)
What is the difference between SM-N915FY and SM-N915F, I understand that one was for the European market and the other for the international market (bootloader?, partition?, LTE frequency?) ?
Do any of you have a Kitkat full stock firmware (BL, AP, CP, CSC) region XEF ? I can't find any on Internet, all the links are dead.
Thanks a lot for your help
Feel free to answer me even if you only have part of the answer !
trucmuchebidule abc said:
Hello,
I would like to downgrade a Galaxy Note Edge (N915FY) to Android Kitkat but I haven't done it in a few years. I wanted to make sure I understood everything before I made any mistakes. I saw on differents topics on XDA that Samsung was preventing to downgrade on their devices since android 5.0.1.
In this case :
Is reinstalling the bootloader of an Kitkat firmware with Odin is enough to reinstall an stock android 4.4 firmware after ?
Did you know where I can find an Android 4.4 bootloader for N915FY (can I extract it from the stock firmware) ?
Did I need to do and tick "Re-Partition" on Odin ?
If I do a re-partition, what PIT file should I use (see on sammobile.com) ? (TBLTE_EUR_OPENBTU_HIDDEN100M.pit or TBLTE_EUR_OPENBTU.pit)
What is the difference between SM-N915FY and SM-N915F, I understand that one was for the European market and the other for the international market (bootloader?, partition?, LTE frequency?) ?
Do any of you have a Kitkat full stock firmware (BL, AP, CP, CSC) region XEF ? I can't find any on Internet, all the links are dead.
Thanks a lot for your help
Feel free to answer me even if you only have part of the answer !
Click to expand...
Click to collapse
I don't think is good idea downgrading to KK, i have try it myself flashing with odin and rooting and oll that but then KK was crashing often as it look like the phone is dying, then i have to flash LP and MM to get reed of that crashes every few minutes.
Here are all the updates for note edge. http://samsung-updates.com/device/?id=SM-N915FY flash with odin in download mode.
Alboooz said:
I don't think is good idea downgrading to KK, i have try it myself flashing with odin and rooting and oll that but then KK was crashing often as it look like the phone is dying, then i have to flash LP and MM to get reed of that crashes every few minutes.
Here are all the updates for note edge. http://samsung-updates.com/device/?id=SM-N915FY flash with odin in download mode.
Click to expand...
Click to collapse
Hello,
Thanks for your answer, I finally left the phone with the latest version of marshmallow available. What surprises me is that I only saw positive opinions on the kitkat version, since the phone works pretty well so I thought it wasn't worth the risk of downgrading.
Maybe the bugs you had come from a problem with the memory chip in your note 4, I have the impression that this often happens after a few years.
Edit: Oh! And did you have to dowgrade you bootloader before install kitkat ? I also tried to install kitkat on a defective note 4 motherboard and I had a lot of bug, but it was without repartion and with a one file firmware (I did'nt find any 4 files/repair firmware for the n915fy with android 4.4). Also an important part of link of firmware listed on samsung-update for kitkat are dead.

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