Download the .zip file and extract the firmware (often a .bin file) to the root directory of a FAT32-formatted USB drive.
Insert the drive into the receiver, navigate to Expansion > USB , select the software file, and confirm the update.
Avoid third-party forums where possible to prevent downloading corrupted or malicious files that could "brick" your device.
To update or clear the flash on your receiver, follow these general steps found on Tiger support resources: