: If the TV still boots, go to Settings > System > Software Update > By USB .
Are you experiencing a specific with the Grunkel 1913, such as a stuck logo or a blank screen? Download SIS231 P83 Grunkel 1913 Firmware USB rar
: Unpack the .rar file and copy the firmware file (often named upgrade_loader.pkg or similar) directly to the root of the USB drive. Do not put it in a folder. Initiate Update : Turn off the TV. Insert the USB drive into the USB 2.0 slot. : If the TV still boots, go to
: Another dump for the same board model can be found at Elektrotanya . Do not put it in a folder
Once you have located and downloaded the .rar or .bin file, follow these steps to update your Grunkel TV: : Format a USB flash drive to FAT32 .
: Installing the wrong firmware version for your specific panel (e.g., V390HJ1-XC01) can cause "brick" the device or result in an inverted or distorted picture. Always verify the panel number on the back of the LCD screen before flashing.