I was trying to install the newest firmware update for my device from 1.01 to 1.21. After first restart the device was reading ... and finally it shows 1.01 --> 1.01  0%.. -1% and goes to update failed. press home button.

After pressing home buton going to same trouble.
Can anybody help me?

I have Avic-960BT, yesterday I tried to update it with the SD card and I don't know after completing to 100% it restarted and then started giving error 

Software Error, contact pioneer service center or authorized dealer. 

Dear Abdel

Did you manage to get  the problem resolved? Can you help me?? 

Hello igot the same problem with my AVIC F980DAB, you guys find out how to fix this?