You lose root but unrevoked can root it. I'm not sure about working in Europe though if u have the APNs it should.
will this help in bypassing the USIM lock?Not sure if this was posted yet but here is the OTA for the
HTC X06HT II (SLCD Desire)
Seems I reached drop box's download limits.
hope it helps.
UPDATE i flash this rom and still stuck at the wrong usim screen but i have a SB sim coming to me from Japan..
any idea what one to try? and this is not rooted yet as i cant get to the settings to turn on debuggingI do not think any ROM will solve your problem but why not try a non-softbank ROM?
You can get both a Japanese keyboard and the softbank mms app from the market...
Sent from my HTC Desire using XDA App