Are you currently facing a specific error like a or a black screen , or are you just looking for the installation instructions ?
While a single "official" review for this exact .rar part doesn't exist, Download P75 338 1366x768 512M NORTH TECH 32SMS part5 rar
You cannot just put the .rar file on a thumb drive. You must extract the actual firmware file (usually ending in .bin or .img ) to the root directory of the USB. Are you currently facing a specific error like
Most technicians on sites like JustAnswer suggest using a small (8GB or less) USB drive formatted to FAT32 . Larger or NTFS-formatted drives often fail to trigger the update. Download P75 338 1366x768 512M NORTH TECH 32SMS part5 rar