I've just used this to update my F900BT, quite a lot of hassle so a couple of notes:
Downloaded iGo8 "Download as speedcam" txt file from poiplaza (their website is giving out viruses so beware, if something unusual pops up shut it down with task manager and run a full scan!).
I used spudtxt to convert to spud format but the file had strange carriage return characters (unix maybe)
Open the txt file with Wordpad and NOT notepad (PC only) and save it again to clear these
spudtxt will now convert file ok
Use test mode to copy across to correct location, from memory: my flash disk > apl