[RyaaaannC]

I have an A528B/DS with the CSC XEO, however I want it to be changed to BTU.

I've tried using SamKEY and Chimera ands both said that the phones weren't supported even though they are on the supported models list. I spoke to a member of customer service from each of them and I was told the security firmware if too advanced but they are working on a method to resolve this.

I have also used ODIN with multiple flash files but none were able to change the CSC.

I have seen these phones being CSC changed multiple times with he latest firmware on them so I am fully aware there is a way to do it, I just cannot work out how. I keep sending my phones to someone to do it but for obvious reasons they won't tell me how to do it.

I don't want to root the phone as I don't want to void the KNOX and other than that I haven't been able to find a way online to resolve it.

I also have this problem with G780G and G781, N986B and some A other series Samsung's.

If anyone can help or has any ideas on what I can do, please could you reply to this and point me in the right direction as I am at a dead end.

[mustang7757]

Hi, welcome to AC!
Whats the reason you want to do this ?
You have a dual sim version so the BTU firmware needs to be dual sim also and same or higher bootloader

[RyaaaannC]

To be honest, I'm looking to sell my phone but the person buying it wants it to be BTU. I'm aware it needs dual sim firmware which is what I got from Sammobile to use on Odin. I'm just not having any luck getting to change because of the latest updates and the binary on these models being too recent to change to an older file with the security firmware needed to allow it to work on SamKEY or Chimera.

[mustang7757]

To be honest, I'm looking to sell my phone but the person buying it wants it to be BTU. I'm aware it needs dual sim firmware which is what I got from Sammobile to use on Odin. I'm just not having any luck getting to change because of the latest updates and the binary on these models being too recent to change to an older file with the security firmware needed to allow it to work on SamKEY or Chimera.

Understand , i would let them deal with that but it has to be on same bootloader or higher for it to work and possible OEM unlock has to be checked in developer option as you should have unlock bootloader and try frija firmware tool from xda to download firmware , Odin patch 3b also . I know the US firmware very well what works or doesn't, international has to many lol but you should be able to do this

[RyaaaannC]

Understand , i would let them deal with that but it has to be on same bootloader or higher for it to work and possible OEM unlock has to be checked in developer option as you should have unlock bootloader and try frija firmware tool from xda to download firmware , Odin patch 3b also . I know the US firmware very well what works or doesn't, international has to many lol but you should be able to do this

I tried the Frija firmware but it keeps saying it can't find the firmware against the phone I'm searching for. Is this just for US firmware by any chance? or maybe I didn't have the latest one. Do you have a link to it by any chance?

Also, is the firmware from Frija used for the patched Odin, or can I use firmware from Sam Mobile?