The indicator light on the button panel should begin flashing red, indicating the update is in progress.
Technical marketplaces like Ubuy India for board replacements. Download RD8503 General 1600x900 rar
RD8503 Universal Controller Board: Firmware Installation for 1600x900 Resolution Go to product viewer dialog for this item. (commonly the T.RD8503.03 Go to product viewer dialog for this item. The indicator light on the button panel should
: Always verify your LCD panel's exact model number and resolution before flashing firmware, as incorrect software can potentially "brick" the controller board. T.RD8503.03 User Manual and Setup Guide | PDF - Scribd Download RD8503 General 1600x900 rar