It looks like you’re searching for a specific for a television, likely a 43-inch LED TV using an Mstar chipset.
If you already have the .rar file, you usually need to extract the MstarUpgrade.bin file to the root of a FAT32-formatted USB drive to start the update. Download Mstar Upgrade LEO43FIAB2 20160604 rar
Are you trying to , like a TV stuck on the logo or a "software upgrade" loop? It looks like you’re searching for a specific
Finding specific firmware files like can be tricky because they are often model-specific and hosted on technician forums or manufacturer support pages rather than general websites. Download Mstar Upgrade LEO43FIAB2 20160604 rar