Shows that I have 50502 and 50503 forbidden, with everything else available.
But just because a network isn’t listed in the EF_FPLMN file doesn’t mean there is a roaming agreement in place, and that network’s cells can be used for roaming. It just means it’s not being blocked by being included in that SIM file.
As I said, you can overwrite that file in any case.
This is not the correct syntax. The Operator field is defined in 3GPP 27.007 as “string type”.
That means the correct syntax is: AT+COPS=1,2,"22201"