Below is the whitelist of ports recommended for your IFP board.
"Please see below to whitelist the following ports and servers for the purpose of allowing communication for IFP for updates and services:
FOTA , SOTA related servers are:
https://fota-admin.optoma.com
https://fota-api.optoma.com
https://fota-file.optoma.com
Q: What ports are used for the FOTA service?
A: 80, 443
See below full list of recommended ports for the following services: