Since this is a technical file often sought by repair professionals,
Turn off the TV and insert the USB drive into the TV’s USB port.
Extract the contents of the .rar file and copy the firmware file (usually .bin ) to the root of the USB drive.
Mainboard Model: P75-2841V6.0 P75-2841V6.1
Press and hold the on the TV panel (not the remote) while plugging the TV into the AC outlet.
Sharing the software for the P75-2841V6 chassis used in Grunkel and similar LED TV brands (like Telefunken or Smart-Tech). This firmware is used to resolve boot loops, logo stuck issues, or when replacing the EMMC/SPI Flash. How to Update via USB: Format a USB drive (8GB or smaller recommended) to FAT32 .
The standby light should start flashing, indicating the update is in progress.