PM1115UW doesn't hold WiFi settings

The third model took the settings and is working as expected:

Screenshot from 2022-12-22 12-38-23.png

All three devices were purchased from StarTech Store. The third device was purchased at a lower price and has a date code of 2016 and uses a 5V-2A power supply, while the first two duds I tried were newer and had 5V-1A power supplies.

This is the working model:

Screenshot from 2022-12-22 12-48-25.png

And these are the previous two models I had purchased:

Screenshot from 2022-12-22 12-48-44.png

Date codes. Working model on top:

Screenshot from 2022-12-22 12-34-45.png

Model numbers are identical, FCC & IC numbers differ. Working model on right:

Screenshot from 2022-12-22 12-34-59.png

Older, working model’s ASIN is B00MZERNXQ, the firmware version from the working printserver is: 9.08.50E 0012 (2015/09/24 21:46:58).

The non-working ASIN is ‎B00M77UME8 and is running firmware 9.08.57E 0017 (2021/03/22 19:32:43)

Is the old firmware available for download so I can attempt to fix my newer device with it?

Thank you!