Hello, refunded.
You can also try to unlock with this firmvare version
https://www.sammobile.com/samsung/galaxy-a6/firmware/SM-A600T1/TMK/download/A600T1UVS5BTE1/346222/
or try to flash this modem and unlock it with it
https://drive.google.com/file/d/1vXfOuN1brxaIICsdL7diHEUFjavNFNI1/view?usp=sharing