A direct USB Firmware Bios Bin is hosted on a Google Drive link via this forum.
Press and hold the button on the TV while plugging it back in. Download CV338H U42 1366x768 ZEPHIR part1 rar
Do you have the for this TV, or are you trying to trigger the update using the physical buttons ? CV338H-C42 Software Download Free - Facebook A direct USB Firmware Bios Bin is hosted
Installing the wrong firmware or losing power during the flash can permanently "brick" your TV. Ensure the panel resolution (1366x768) matches your screen's specifications. Download CV338H U42 1366x768 ZEPHIR part1 rar
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Release when the standby LED starts flashing rapidly, indicating the update has started.
Use a FAT32-formatted USB drive (ideally 4GB or 8GB).