Just for your info, the reason you saw those symptoms is that when EFILive attempts to reflash your controller it temporarily loads its own software (called a bootloader) that takes control of the PCM. If the reflash process fails unexpectedly, the bootloader continues to run for a number of minutes to allow FlashScan time to try and recover from the failure. While the bootloader is running your PCM cannot start or run the engine - but it will crank. Eventually the bootloader times out and hands back control to your PCM.
As to why it is failing...
Can you please make sure you have the latest V7 EFILive software (V7.5.5 build 88)
Also make sure your FlashScan (if it is a V2) has the latest firmware (V2.6.12) available as part of the V8 software.
Both V7 and V8 are available here:
http://www.efilive.com/index.php?opt...=48&Itemid=133
Regards
Paul