Some versions of this board allow resolution switching via remote codes without a full firmware reflash.
The file is typically part of a multi-volume firmware update for AKAI Smart LED TVs using the CV338H-U42 Download CV338H U42 1920x1080 AKAI part02 rar
Many repair channels provide direct Google Drive or MediaFire links in their descriptions for specific resolution versions of this firmware. Installation & Service Codes Some versions of this board allow resolution switching
Once you have downloaded all parts (including part01 and part02) and extracted the .bin file: insert it into the TV
Copy the firmware to a FAT32-formatted USB drive, insert it into the TV, and power the unit on. The TV should automatically detect the update.