[Solved] [Request] AYA A39CD3902 Firmware: TP.SIS231.P83 Chassis, C39OF13-E4-C Panel, G920A3XC2BV411332

Hello! I need your help.
Brand: AYA
Model: A39CD3902
Chassis (motherboard or main components): TP.SIS231.P83
Matrix / Panel (if present): C39OF13-E4-C(G1)
Other (comments): G920A3XC2BV411332
I need the firmware please

usb recovery
copy the file SISEU23X8M.bin on an empty usb stick fat32 formatted
unplug the power cord
insert the usb stick and reconnect the power cord
look at the standby led, at the beginning it flashes slowly, after about 1 minute it doubles the speed, update completed
unplug the power cord and the usb stick
reconnect the power cord and turn on the tv: it starts in first installation mode

if it doesn't work with usb recovery, then replace the spiflash and program it with the file SISEU23X8M.bin

Thank you very much, it worked!