Bluelink PLUS vs PRO – is PRO actually worth it for OTA updates?

My free 6-month Bluelink PRO trial for the IONIQ 9 (Belgium) will end soon, and I'm trying to decide which subscription to keep.

The only feature I definitely want is remote climate control, so Bluelink PLUS already covers my main use case.

From what I've read:

• LITE: Connected Routing, voice commands, OTA system updates.
• PLUS: Everything in LITE + remote services (lock/unlock, climate control) + live traffic and weather.
• PRO: Everything in PLUS + OTA updates for maps and infotainment + built-in music streaming.

What I'm not clear about is the value of PRO.

• How often do the maps and infotainment actually get OTA updates?
• Are these updates exclusive to PRO, or can they also be installed manually (e.g. via USB)?
• If manual updates are possible, is there really any advantage to paying for PRO all year?

I'm wondering whether a strategy like this would make sense:

• Stay on PLUS for 6–12 months.
• Upgrade to PRO for one month whenever there's a major infotainment/map update.
• Let the updates install, then switch back to PLUS.

Has anyone looked into this, or already followed a similar approach? Does it work in practice, or are there any catches I'm missing?