Details can be found here: http://www.pocketpct...=JAM-064-128RAM
Coming in at $199 (about 100 UK pounds), it may be worth doing if you can bear to be without your pride and joy while you send it away
Description: Upgrade your iMate JAM/XDA Mini series internal RAM from 64MB to 128MB with our upgrade service. During the upgrade process we remove the existing 64MB and install 128MB. This memory upgrade does NOT require our proprietary driver and is fully recognized by the OS (121.39MB Available). This unit uses low voltage hi-speed BGA memory, so stacking is not available and 128MB will be the maximum capacity.