Vg421wdv2 Firmware 2021 -

This indicates a corrupted flash. You will need to utilize a CH341A SPI programmer to force-write your backed-up original firmware image directly back onto the board's chip.

Double-check that the USB drive is under 32GB, is utilizing an MBR partition map, and is formatted specifically to FAT32. Large or modern exFAT drives will usually be ignored by the bootloader. vg421wdv2 firmware 2021

Source the exact vg421wdv2 2021 bin file from your specific OEM or hardware provider. Do not cross-pollinate firmware between different brand names even if the board model matches. This indicates a corrupted flash