Just hit menu on osd control and then go to the 'Tool' / 'misc' section.
It will display your firmware there.
Yes, when you want a firmware upgrade you would have to send it back.
Your display most likely has 2.1 as all recent ones have. There won't be another upgrade till february as i have read.
edit.
I just got a, again very polite, call from Hazro. Finally.
For support don't use the webform, because its not read by the support department.
Use :
[email protected] at any time you need support.
I will receive address details to return the monitor direcly to Hazro. I will pay shipping costs. Hazro will pay costs to send back.
Monitor will either be repaired or replaced.
Hazro new policy for resellers: No warranty available on international purchases!
In my case i have 3 year warranty. And i would guess other international customers who have already bought have this too.
They told me this process would initially take two weeks, but in my case they have speed up now.
Within minutes after phone call i received email with address for return and instructions.
I must say i feel much better about this now.