Typically a .rar file containing a update.ird or similar firmware file.
If your receiver is unresponsive, you can attempt a USB recovery by following these steps based on community and official procedures: Format a USB drive to FAT32 . Download Recovery File Xcruiser XDSR685 Avant rar
The device will erase old data and restart. This process may take several minutes. Typically a
To wipe system data and restore the receiver to its original factory condition. This process may take several minutes
The recovery file for the is typically used to fix devices that are stuck on the "Boot" logo or experiencing software hangups. These files are generally provided as compressed archives (like .rar or .zip ) and must be extracted before use. Recovery File Details
Do not power off the device during the update process, as this can cause permanent hardware damage. Slumber - Firmware Update Guide (v2.0) - Avantree Support