A reliable source for TV dumps. While a direct match for "Rolsen" is rare, you can use the dump for the Vivax TV-32LE73 which shares the exact same TP.SIS231.PT851 board
Often carries the exact Rolsen brand files. Search for " 29D1307T2C Download SIS231 PT851 ROLSEN 29D1307T2C Dump rar
You cannot install this via USB if the TV won't boot. You must use a programmer like the CH341A or RT809F to flash the .bin file directly to the 8-pin flash chip. A reliable source for TV dumps
usually uses 3.3V logic for the flash chip; ensure your programmer is set correctly to avoid burning the chip. vivax tv-32le73 tp.sis231.pt851 dum - Elektrotanya Download free of charge (10 files / day): Elektrotanya vivax tv-32le73 tp.sis231.pt851 dum - Elektrotanya You must use a programmer like the CH341A
The firmware dump for the TV (specifically for the SIS231 PT851
" on the Remont-Aud firmware database (Registration and a technical test are usually required to download).