A code update from a USB stick stops on its second phase and sits there for many minutes.

Code update freezes partway: reformat the USB stick and redo the update

Cause: The update stick or its files were not readable by the game, usually because the stick was not formatted FAT32, or it was in the wrong USB port.

Checks

• Check the stick is formatted FAT32.
• Check you are using the USB port the update instructions name.

Fix

• Turn the game off.
• Reformat the stick as FAT32 and copy the update files onto it again.
• Put the stick in the correct USB port before you turn the game back on.
• Power up and choose the full update.

Systems

• Spike 2

Games

• Aerosmith

Source: Pinball Repair help group!! (Facebook group)