Help Update S926B with KG active with MDM

[Filou69]

Hello,

Last year I bought a used Samsung S24+ (S926B - Exynos CPU).
Unfortunately, this phone was locked by KG without the previous owner notifying me.

So I had to wait until the end of September 2024 to unlock the KG via MdmToolFix.
With this solution to remove the KG lock, system updates are disabled, which is understandable if we want to keep an "active" KG and be able to use the phone.
USB debugging is also disabled because it is grayed out in the phone's developer options...

I have been using the phone for several months but I would like to know if I can update the firmware of my phone (current FW S926BXXS2AXD6).

I would like to know if it is possible to update the phone without USB debugging ?
Will the KG go “Locked” again ?

If anyone had any information to share with me that would be great.

Thanks,

 

[Filou69]

Hi,

Small update of my topic for those interested, the USB debugging disabled was due to the “Automatic Blocker” function of the Samsung OS which was activated.

Following the deactivation of the function, I was able to flash with Odin the firmware S926BXXU3AXH7 (BIT3) - Security patch level: 2024-08-01.
This updated my phone to the new firmware without any loss of data.

KG unlocking has not been affected, the phone remains fully usable for over a month.

Last question, up to what BIT or security patch level can MDMtoolfix be supported on an S926B (Exynos CPU)?

Thanks