2WIRE 1800HG ADSL2+ firmware upgrade

[#1]

Hi All,
I am trying out an ex-BT 1800HG router which can reliably achieve higher connection speeds than my Netgear DG834 (although tonight retrained for the first time).  I noticed that the 1800HG is running firmware version 3.7.5.  After some exchange of emails with 2WIRE I was advised that the ISPs have complete control of the firmware that is pushed onto the routers.  They also told me that only versions 4 & above will handle ADSL2.
Given that neither my BT exchange nor PN are yet implementing ADSL2+ is the firmware upgrade something that I have to wait for, or can I ask for an early image to upload manually?
What version is your 1800HG running (assuming you haven't flashed it with the various images available on the web from other countries)?

[#2]

I've got a 2700HGV which is running the BT default firmware and haven't had any issues.
My line attn improved and synch speed improved.
I've thought about flashing it with a different firmware but I don't see any point yet.
Know it's a different router but though my experience might be useful.

[#3]

Thanks adiewoo,
What's your current firmware version?

[#4]

It's reporting 4.25.33 which is the oldest BT firmware for the router according to forums at the scream.

[#5]

The thing is that your 2700HG has a different firmware (more functions) than the older 1800HG has.  I tried to upgrade the firmware online from two different ISPs (PlusNet and AOL) and on both occasions the response was that I have the latest firmware for the 1800HG (version 3.7.5) and that I should check back later.  The 3.7.5 is definitely not ADSL2+ compatible - so the question is what do owners of the 1800HG do after ADSL2+ is activated on their line?
What's PN's advice on this?