USG20-VPN factory reset without pwd / bootloader mode

ruttercrash
ruttercrash Posts: 2  Freshman Member
in USG FLEX H Series

Hi all,

I have the device above with a modified firmware 4.x. I can not log in via web gui or serial. I can boot via serial and after CTRL-C I get a promt USG20-VPN>, but all commands like "restoredefault" throw "ERROR". Pressing and holding reset and then power on has no effect, it just boots normally and not in bootloader mode.

I read I can try to short two pins of the nvram while booting to force bootloader mode, has anyone done this already?

I'm wondering which chip the nvram is, I have a Kingston EMMC 08G, on the board, does anyone know?

Best & TNX

All Replies

  • Zyxel_Judy
    Zyxel_Judy Posts: 2,045  Zyxel Employee
    Zyxel Certified Network Engineer Level 2 - Nebula Zyxel Certified Network Engineer Level 2 - Switch Zyxel Certified Network Engineer Level 2 - Security Zyxel Certified Network Engineer Level 1 - Nebula

    Hi @ruttercrash ,

    Do you mean that after pressing the RESET button, the USG20-VPN only reboots but does not reset to factory defaults?

    If so, please push the Reset button until the port connection LEDs turn off (after about 5 seconds).

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