Combine all RAR parts and extract the binary file (usually named something like allupgrade506_8GB_1GB_refXX.bin ) to the root directory of the USB drive. Initiate Update: Power off the TV. Insert the USB drive.
Use a 4GB to 16GB USB flash drive formatted to FAT32 . Download SK506S PB802 1920x1080 Akai REF68 part03 rar
You can find similar technical resources and firmware dumps on professional repair forums like Kenotrontv or Monitor.net.ru . Combine all RAR parts and extract the binary