my head unit is not working

helmi_zr1

Senior Member
Nov 13, 2010
68
1
0
Dear All
i have doing stupid things in my unit
my unit is not joying and i have updated wit joying firmware after that the unit is working with top message that Ui and MCU not matching so i dissed to downgrade with original firmware so i use custom recovery apk

after restating my unit its not working any more i have been trying to restarting several time with reset bottom but nothing is happen except logo joying is appear for 2 second then black screen come again

here photo for my head unit