update. If the TV is functional and you just want an update, use the core update 1. Preparation : Use a high-quality USB stick formatted to File Placement
If the 17mb130s firmware link is dead for your rare panel, you can extract firmware from a working board using the same ISP tool: 17mb130s firmware link
Always verify the panel type and tuner version in the service menu (Menu + 4725) before flashing, as the same mainboard can support different screens. update
Many Chinese OEMs (like Holystone, Topway, or K&D) maintain legacy FTP servers. Search for: 17mb130s firmware link
: Forums like Elektroda or KenotronTV often have members who share "USB dump" or recovery files for specific board/panel combinations.