Your unit should be on 2.0006 and you should have testmode files on the SD card of course, else you can't move anything nowhere and can't make backups.
But yes, that's actually how it's done. Worldlicense and hacked ezrider.exe are included.
Steps are:
1. Take an SD-card (FAT or FAT32, 2GB will do the job, if Avic is already backed up, else 4GB at least!)
2. Copy testmode files and my archieve to it.
3. From any source, which provides maps for Igo 8.3 - they don't have to be from Pioneer devices - copy the map folder, dem folder, poi folder and the buildings folder to the equivalent place to the SD-card(APL2\Igo\Content). I didn't upload them for traffic reasons.
4. Put SD-card in F500BT and power it on.
5. You shoud be in test mode. Backup your My Flash Drive/APL2 folder now, if you don't already have by now. This may take serveral minutes.
6. AFTER backup, delete the APL2 folder on My Flash Drive
7. Copy APL2 folder from the SD-card to My Flash Drive
8. Remove SD-card
9. Power cycle Avic
That's it. Avic should boot up as usual.