i have old firmware can you modify with latest openwrt firmware .my router modal ta8h.
i have firmware file . i send file if you need this file.please help me sir
That is not how it works. Please take a look here: https://openwrt.org/docs/guide-developer/add.new.device
read the red box, and the cyan box below it -
This device never had mainline support and only ran the manufacturer build of OpenWrt.
The newest image was built in 2020, so likely based on 19.07 at best, which has numerous open security vulnerabilities.
Link to last firmware: