Firmware archive for the ZyXEL P-660RU-T1 v2 ADSL modem, 960 KB in ZIP format. It is for restoring a unit with damaged software or reinstalling a known working release. The v2 tag refers to the hardware revision, which differs from v3 and v3s boards, so images must not be crossed between them. Read the label on the modem to confirm the revision, extract the image, and upload it through the web management page or the bootloader, leaving the device powered until it reboots.
The button opens the matching file on RM Schematics, or a source page if it is not catalogued there yet. The original attachment is from @biosarchive. Enginerys does not host this file.
How to open a .zip file
Compressed archive that every operating system opens without extra software.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →