so my phone is s9+, one ui 2.1, android 10, g965fxxsbeth2, security patch september 1 2020...my problem is root checker says device is not properly rooted and i wanna remove that, i tried to flash with xxsbeth1, security patch august, and then again to xxsbeth2, but still the same and when i tried software update, downloads fine and when phone restarts and start instaling, gives error on 22% and....so how can i delete root? can i downgrade to android 9?
---------- Post added at 07:13 PM ---------- Previous post was at 06:57 PM ----------
i bought that phone like 3 months ago....phone is working great, just sucks i can't unroot, i can't properly root, i don't know if i can downgrade....it would be awesome if i could downgrade to 9.0 and then root properly...can someone help
2) Extract the firmware file you just downloaded. You should get 5 files:
AP (System & Recovery)
CP (Modem / Radio)
CSC_OXM (OXM CSC file, will wipe your phone)
HOME_CSC_OXM (OXM CSC file, will NOT wipe your phone)
3) Add each file to it's respective field in Odin v3.13.1. Use CSC_OXM if you want to do a clean flash and HOME_CSC OXM if you want to keep your apps and data.
4) Reboot your phone in Download / Odin mode with the following button combo: POWER + VOLUME DOWN + BIXBY
5) Once in download mode, connect your phone to the PC, preferably using the original USB cable you got with your phone. Odin should detect your device and a blue box will show up with the COM port number.
6) Do NOT tick any extra boxes. The only options to be ticked are F.Reset Time and Auto-Reboot.
7) Click the start button, wait for Odin to say 'PASS'. Once the flash is complete, your phone will reboot.
Firmware screenshots, changelog, and download links will be in 2nd post of this thread.
1) Will this trip KNOX, and will I lose my warranty?
Answer: Short answer would be no, your KNOX counter will remain at 0x0 and warranty stays valid as well.
However, some service centers might note regional differences between builds based on the latest build available for your CSC, indicating that the phone has been flashed, so if you're sending your device in for a service/repair/replacement, then I'd suggest flashing to the latest build available for your home country's CSC. Usually not required though, so not a big deal.
3) I flashed 'XXXX' build, but now I can't get OTAs for a newer build that's available on my CSC?
Answer: Now, I'll be using fake build numbers in this example, but you should still understand how I'm explaining this.
Suppose your current build is very old, XXU1ARA1, and the latest available multi-CSC OXM build is XXU1BRA1, so you flash it on your device.
Now, BRA1 is not released for your specific CSC, so you won't get OTAs for it to any further builds because no subsequent OTA file exists on the Samsung server for your CSC.
Samsung will then release a new build for your CSC called XXU1BRA2, so the only OTA file existing on the server for your CSC is XXU1ARA1 > XXU1BRA2, so an OTA from XXU1BRA1 > XXU1BRA2 will not be possible, and the only way to regain the ability to get OTAs, is by flashing BRA2 and then accepting further OTAs from there on.
This may seem cumbersome to some people, but if you're impatient and always want the latest build, then just continue flashing as you normally would.
4) Can I flash the ROM in the main post without flashing the builds that came before it?
Answer: Yes you can. When flashing ROMs with Odin, you don't need to be on a specific build to flash them. They don't need to be flashed in order.
You can be on the oldest possible build and flash directly to the latest one.
The files linked in this thread are ONLY compatible with the following devices:
SM-G965F (International Single SIM)
SM-G965F/DS (International Dual-SIM)
There are no Dual SIM specific ROMs, any ROMs for the G965F will work on the Dual SIM models and you will retain Dual SIM functionality and both your IMEIs.
Stable Pie (XXU2CRLI) is now available via OTA and SamFirm for G960 and G965F users.
I will be uploading to AFH and MEGA, but for those who can't wait, go and attack Samsung servers and get it through SamFirm.
Sadly, I won't be able to experience it for a few days since I'm giving my S9+ in for a battery replacement today, but should get it back later this week.
Merry Christmas and a Happy New Year to everyone! Don't forget to thank Samsung for getting this update out to us early
Comes with new kernel, new baseband version and August security patch.
Official changelog also mentions improved camera performance which could be regarding the issues with Night Mode crashing that were introduced in the CSF2 update.
For those wondering why the update still has CSGx build number, it's because the build/compilation date was still July and not August like some other devices.
Like all other OEMs, Samsung gets access to security patch details well before they're released to the public so the build dates don't always have to be in the same month that the patch is intended for.
Thanks to @applepay and his CSC change method in the S9+ forums, I have tested the guide and posted it with screenshots.
It works 100% as described by the OP, CSC is changed on my device and proof has been given below.
You can use this tutorial to switch to your desired CSC for getting quicker OTAs. However, keep in mind, if you change to a CSC that is different from your home country, you will no longer be able to use VoLTE, WiFi calling and Samsung Pay. Furthermore, doing a factory reset with a SIM card from your home country will revert back to your previous CSC.
This will NOT allow you to register for the beta program.
I would also like if anyone with a region locked device, such as BTU/BTU/BTU could test this tutorial to see if it changes the CSC for them.
Let's start off by saying, I did NOT find this method, I simply used the guide from @applepay in his thread HERE.
I've added screenshots and proof to show that this works, and to show you how to use RealTerm to change the CSC on your device.
Now, the main purpose of this would be to help those who have region locked devices, however since I don't have one, I can't test this. This will also benefit those who want DBT for example, for quick OTA updates, but don't have a German SIM card to change the CSC using the normal method.
My device is a local Pakistani model so the CSC was PAK/PAK,PAK/PAK. Just for proof, I tried changing it to NEE (Nordic Countries). Screenshots are given below.
Step 1) Power off your device and make sure to back up all data, since this will require a factory reset. REMOVE your SIM card before proceeding further.
Step 2) Boot into download mode, and flash the combination file for your device. I had a v2 combination file for S9+ already, so I flashed that.
Download link for v2 combination file for G965F - AndroidFileHost
Your device should look like this while booting:
Step 4) Click the 'Port Tab' on RealTerm, for me it showed Port 8 = \ssudmdm0000, if this shows up for you, it means your device has been detected by RealTerm, then set the Baud rate to 230400
Step 5) Go to the 'Send' Tab on RealTerm, enter 'AT' and hit the 'Send ASCII' button, you'll get this as a reply:
Step 6) Enter 'AT+PRECONFG=1,0' and hit 'Send ASCII' again, you should get your current CSC as a response, in my case it is PAK.
Step 7) To change your CSC to your desired CSC, use this command 'AT+PRECONFG=2,???', replace ??? with the CSC you want to install on your device. I chose NEE, so my command looked like this: AT+PRECONFG=2,NEE
Step 8) To confirm your changes have been applied, type this command to test the current CSC, 'AT+PRECONFG=1,0', your response will look like the message in the screenshot below:
Step 9) Go to SamFirm, type SM-G965F and download the latest firmware of the new CSC which you have applied. Flash in Odin with AP, BL, CP and CSC_OXM and your device will reboot. Since the CSC has been changed, first boot will take a little longer than usual.