Firmware at the Zyxel C3510XZ link is wrong. The chart shows it should be CZX001-5.02.001.6. If an employee sees this would they pass it along to the right folks to get the
ZyWALL/USG] Firmware Upgrade Procedure – Zyxel Support Campus USA
ZyWALL/USG] Firmware Upgrade Procedure – Zyxel Support Campus USA
ZyWALL/USG] Firmware Upgrade Procedure – Zyxel Support Campus USA
CPE] How can the firmware be upgraded/updated on the VMG series – Zyxel Support Campus USA
OpenWrt Wiki] ZyXEL NR7101
Zyxel Router Firmware Uprade
VMG - How to upgrade the firmware – Zyxel Support Campus EMEA
Zyxel NBG-6617 | ZyxelGuard.com
Secret backdoor discovered in Zyxel firewalls and AP controllers