Firmware archive of 960 KB for the P-660RU-T1 hardware version 2, part of the Zyxel Prestige ADSL modem line. The file name gives no firmware version or date. Repair use typically involves reloading firmware on a unit that will not boot properly or lost its settings, using the bootloader console or web upgrade. Different hardware revisions of this model use different chipsets and firmware, so confirm v2 on the device label before writing, and back up whatever image is currently on the modem.
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 →