Just modded mine, HW58 and came with 04.00 out of the box. Downgraded to 02.02.02, did the hack with demoIDN, then upgraded back to 04.00, success.
Mine screen flickered on occasion with the stock 04.00 software, and still does it after the hack.
Anyone got a mirror of 00.02.04.01.02 (link in the first post is dead)?
Interestingly, i couldn't connect with Ultrascope after downgrading to 02.02.02 either, however the version of Ultrascope i have installed (supplied with my scope) is 01.07 not 01.08
Not sure if it is to do with a having a new scope running on 02.xx FW, the fact that the firmware is hacked, a wrong version of Ultrascope or a combination of the former haha.
Thankfully it connected fine after upgrading the firmware back to 04.00.
edit: downgraded the FW to 02.04.01.02. Significantly lower noise floor and no screen flicker (yet!), Ultrascope works, very happy