Before updating, check your current version. Log into your modem at 192.168.1.1 (username: admin / password: admin or ptcl ). Navigate to .
Press CTRL + SHIFT + M on the status page to reveal: ptcl modem an102025 software update exclusive
If the login page is not loading, ensure that: Before updating, check your current version
Access the official PTCL support portal or authorized mirror links to download the exact firmware file matching the AN1020-25 model designation. The file typically carries a .bin or .img extension. Step-by-Step Installation Guide Press CTRL + SHIFT + M on the
Download the official, untampered AN102025 update file.
Click on or Firmware Update from the dropdown options. Click the Choose File (or Browse) button.
Older versions of the AN1020-25 firmware contain a major security flaw. Attackers can remotely navigate to http://[Router-IP]/restoreinfo.cgi to bypass authentication and force a factory reset, exposing default login credentials ( admin / admin ). The latest software update completely blocks this unauthorized access.