Once you have downloaded and extracted the .rar file, follow these steps to install the firmware:
You can find the firmware for various resolutions, including those near your requirement, through these community sources: Download SK105A 1600X1200 Firmware USB rar
For the universal LCD/LED TV controller board, firmware files for the 1600x1200 resolution (and others) are often shared in community-driven archives rather than a single official manufacturer website. Firmware Download Sources Once you have downloaded and extracted the