Even without custom firmware, you can improve your HDR-1100S experience through hardware and settings adjustments: New Arris Freesat Recorder or Reconditioned Humax HDR1100S?
Updates typically happen automatically over-the-air (OTA). If yours fails, you can manually update via USB using a FAT32-formatted drive. Performance Tweaks & Hardware Upgrades humax hdr1100s custom firmware
This update specifically addressed issues with the BBC iPlayer getting stuck on the loading screen. Even without custom firmware, you can improve your