Originally Posted by O HELLA BMW
do you need a labtop to update the jb4 with the usb cable?
im sorry for asking all these noob questions, i just want to make sure i understand the jb4.
is the JB4 plug and play in stock and ready to ship for my 08 335i e93?
In stock and ready to ship!
You do need a laptop to upgrade the firmware on the JB4. Something as simple as a netbook will suffice.