zg825

I had my system installed for me and I am trying to ground the parking brake wire. I am idiot when it comes to this, but I have a couple quick questions. I have the F90BT, so the parking wire is green correct? Also to get to the parking brake do I have to go behind my system or can I cut the green wire that runs under my steering wheel. The green wire goes from the parking brake under the steering wheel and up towards the system. When I cut the wire and taped the exposed wire to metal, the parking break signal on the car was lit up. The car was not registering that the parking brake was

I am new to all of this and would greatly appreciate some help. I downloaded the files, and it all went through as said. I have the data.zip on my SD card, and I want to edit it to do the software hack and to get it to go faster. Once I edit the files and rezip everything to be data.zip, where do I upload everything to on my F90BT? I copied the entire Flash disk onto another SD card and could not find the files anywhere. My question is once I edit the files I need and rezip it, how do I get the new files onto my system (Where do I paste the files) Thanks so much