where to download latest firmware V1.00(ABQU.6)C0 in August 2024 for LTE3301-PLUS

SiSZyComm

I have a LTE3301-PLUS without Nebula service and firmware V1.00(ABQU.5)C0 installed.

googleing for a new firmeware resulted in this web page:

https://www.zyxel.com/service-provider/global/en/security-advisories/zyxel-security-advisory-buffer-overflow-vulnerabilities-some-5g-nr4g-lte-cpe-dslethernet-cpe-fiber-05-21-2024

showing a new firmware as Hotfix is available with Standard patch V1.00(ABQU.6)C0 in August 2024.

But looking up my device on Zyxel download section does not give me any firmware at all, not even my old one. None, just none!

https://www.zyxel.com/ch/de-ch/support/download?model=lte3301-plus

I see there is a newer firmware for a LTE3301-PLUS for Nebula:

https://www.zyxel.com/global/en/support/download?model=nebula-lte3301-plus

But I don't know if i can that firmware to my device, as the firmware number is completely different.

any ideas?