A while back my little brother asked me to downgrade his 4.00 slim ps3, using the e3 flasher. Most of the process has gone well, but I'm stuck at a certain part. I am at the part where I have to insert a downgrade dongle, but I must confess that I do not know what exactly a downgrade dongle is. Is it another part that I'll need to buy, or do I need to put certain files on an usb stick or android or something? I've been searching around, but I can't really find a definitive answer (some sources tell me that I'll have to buy it, others say that you can put it together yourself, or that you can use android, etc.).