I found V353 Update.pkg file....
hi could u confirm which firmware plays hdr with native tv apps ?The R579 version killed the HDR on all the native TV apps ( Netflix, Moviesanywhere, YouTube) but the HDR is enabled & working good when connected to external devices ( Roku, UHD Player, Firestick) through an AVR If anyone facing this similar issue please update in the post.
My c2us on v575 now
Unzip, until V8-MT56552-LF1V308.pkg and copy to USB.
Also refer to this thread .....even V339 :
TCL TV MODEL NO : led48p2000fs CURRENT SOFTWARE VERSION : v8-mt56552-lf1v089 HELLO COMMUNITY , I have TCL smart TV MODEL NO : led48p2000fs and the current software version is v8-mt56552-lf1v089 , is it possible to upgrade the software version ? i...forum.xda-developers.com