Hold the or Reset button on the TV and plug it into a power source.
You can find similar technical resources and firmware dumps on professional repair forums like Kenotrontv or Monitor.net.ru . Download SK506S PB802 1920x1080 Akai REF68 part03 rar
Use a 4GB to 16GB USB flash drive formatted to FAT32 . Hold the or Reset button on the TV
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. Download SK506S PB802 1920x1080 Akai REF68 part03 rar