unfortunatly i don't have any experience with things like these.
i found this on the forum though:
In the list of device IDs there is at least a note of the Senao 7510 device.
That and the possibility of other Sophos AP Flashs could maybe lead to success. Afaik it should be from the same era as the AP30. The AP100 is newer.
I don't know if someone with more experience could be motivated enough to look into this. Would be great, but i fear it would be a dead end for me, if i try that alone.