Note: all this info was pulled from XDA developers forum. All kudos go to them.
Note: if something goes wrong during this process, you will probably brick your device and void your warranty.
That said, it worked for me. But do not attempt this lightly. In fact, do not attempt this at all.
First: flashing bootloader 1.01MFG
download
ftp://xda:[email protected]/Hermes/Cooked_ROMs/SPL-1.01MFG_Pack.zip
First disable usb connections in activesync.
Flashing SPL-1.01 MFG instructions
1. Put hermes in bootloader mode (side ok + power button + softreset)
2. Connect Hermes to computer using USB cable.
3. Open mtty.exe, select "USB" from the dialog box, then hit Ok.
4. Hit enter twice and you'll see the "USB>" prompt.
5.Then type these commands: (note the use of 'lnb*s*')
USB>task 32
Level = 0
USB> lnbs SPL-1.01.nbs 50020000
USB> task 8
6. Device will reboot after this, with bootloader 1.01-MFG on it.
If you get level = FF, then your device is not superCID. Abort and go back to flashing SuperCID