I'm trying to upgrade to 03.18.90, but it keeps giving me an error 260.
I've flashed my ROM before, using USPL to get that Touch ROM on my Artemis.
I can succesfully connect and sync with my phone and vista pc.
If I try to run USPL again it gives me an error 260: update error.
If I try to run the RUU radio update from version 03.18.90, it gives me an error 260: connection.
Both times the Artemis is stuck in bootloader mode and I have to softreset.
After the soft reset it's back to normal and I can still use it, but it's still stuck with version 03.08.90. I don't understand, I can succesfully connect and sync with Vista, but somehow it gets disconnected during the update.
Update: I have downloaded a Radio ROM from the official T-Mobile website. T-Mobile says this will fix my problems (but I doubt it). It's version 02.92.90.
I ran the RUU update from that 02.92.90 Radio ROM and it installed without problems. That surprised me.
Why can I install one Radio ROM (02.92.90), but I can't install 03.18.90? Strange. Does it have to do with the USPL? If you USPL once and then install a whole new ROM, you can't do it after that?
Update 2: I had no patience and downloaded 03.21.90.
And that installed succesfully.

First thoughts: I can connect to the T-Mobile network. My Tomtom 7 gets a GPS fix, but I don't know if the speed has increased or decreased. WIFI works.
Not enough experience yet with battery drain, nor do I know if this new version has fixed my previous problems with the T-Mobile network.
I'm going to test this one out and will report back later.
Update 3: I've been testing out 3.21.90 for almost 2 weeks and I'm pretty content with it. In Rotterdam I have no reception problems at all. GPS also works very fast. Wifi and Bluetooth work well. GPRS I have no idea, I don't use GPRS. So thanks for 3.21.90, I'll use this one from now on.