Occasional firmware upgrade links are shared via Google Drive or LinkedIn by repair technicians. How to Install the Firmware
Can handle panels up to 1920x1080 , though the firmware must match the specific panel's resolution (in this case, 1280x1024). Where to Find Firmware Downloads
TSUMV29LU, TSUMV29LE, TSUMV39LU, TSUMV39LE, TSUMV59XU, and TSUMV59XE.
Do you need help of your LCD panel to ensure the 1280x1024 firmware is the correct match?
Sites like the Lab-One Forum host "USB Firmware Software Bios Bin" collections that include the 1280x1024 resolution.
The LED will flash rapidly during the upgrade. Once it stops flashing, the update is complete.
Interrupting power during this process can "brick" the board, requiring an external SPI programmer to fix the 8-pin flash chip.