AW3423DWF, firmware rollback to M3B104 or M3B106?

Hey. I need Dell monitor AW3423DWF firmware - M3B104 or M3B106. Could you please share it? M3B107 disallows me to change the contrast in HDR400 and HDR1000 modes and the default configuration is too bright for me and I cannot use HDR anymore. It is a huge issue for me. Please help.