it has Bluetooth 5.2 as indicated in the datasheet, what is its use? can we use it for some function, like IoT, what is the reason for having it in the equipment?

datasheet v1:

https://support.omadanetworks.com/br/document/5282/

on page 3, sixth item, under antennas  

another final question:

In standalone mode, the ER7206 can use USB for 4g, but also for a connected USB hdd/ssd share, I use Omada SDN (Windows) 5.15.20.13, I can put 4g normally, I have used it, but I see that the controller does not have an option for hdd share or I did not find the option, if not, is it something I can really expect for a next update?

ER7206 V2 

FW BUILD: 20250218