Firmware download list for J Series

[abced123]

what does this mean for this warning ?
" Warning! DO NOT EVER INSTALL FIRMWARE UPGRADES FOR Samsung SmartTV !!!! BY UPGRADING YOU WILL ONLY LOSE EXISTING FEATURES AND TURN YOUR TV INTO DUMBTV!!!"

The firmware in this link is not for smart TV ? i am confused

[Anyfrievich]

Hi friends. I now have a TV F9000 + One Connect from the JS9000. Firmware T-HKPDEUC_1452.0 installed Root + Oscam.
Tell me the most stable firmware (for Root) for the JS9000, and where can I download it?
I was looking for T-HKPDEUC_1480.4 - I did not find it anywhere.
Thank you.