Format your USB drive (FAT32 is usually recommended) and copy the unzipped firmware file to the root directory.

Firmware patches help protect the device's stability and protect against potential software vulnerabilities. How to Upgrade Your iClass 9797 XN PVR

The iClass 9797 XN PVR HDMI continues to be a popular choice in regions like Iran and the Middle East due to its balance of affordable pricing and reliable feature sets. Iclass 9797 Xn Pvr Upgrade - Facebook

Beyond recording, the USB interface often supports playing back various media file formats directly from a flash drive or hard drive.

While robust, the iClass 9797 can occasionally run into hardware or software snags:

Power off the receiver, insert the USB drive, and power it back on. Most models will automatically detect the update file and prompt for a "Yes/No" to start the process.

Crucial: Never turn off the device or disconnect the power during the progress bar. The unit will typically reboot itself once the flash is successful. Troubleshooting Common Issues