: Installing incompatible firmware (e.g., from a different region's FiberHome model) can permanently disable the modem. : Unverified files may contain malware or backdoors. ISP Compatibility
Finding the official file can be tricky as PTCL does not host a public repository for all modems. However, for the AN1020-25, you typically need the (usually ending in .bin or .img ). ptcl modem an102025 software update exclusive