Copy the .img or .zip file to the root directory of a FAT32-formatted USB drive.
Depending on your specific hardware, the installation process usually follows one of two methods: Method 1: Local Update (USB/SD Card)
While firmware updates generally don't erase user files, it is best practice to back up any critical settings or local media.
Updating to version v5.2.1.37-en-ptc01 typically addresses several key areas of device performance: