My sync3 is a brink since updated

I tried to update my sync3 for 3.o to 3.4 I put the stick in then it told me to restart it and it came up blank I can use the volume key to reboot it because I put in a tesla 14.4 inch screen and it took away that option to reset it so I was told to hold the volume key with the right seek button on my steering wheel that didn’t work either I have taken the negative batteries off that didn’t work will it help if I go into forscan and reboot the module there i don’t know what else to do thanks


SYNC Region: NA

Navigation Variant: Nav

Manufacturer Year: Pre MY20

Install Type: OEM

Old SYNC Version: 3.0

New SYNC Version: 3.4

Do you have a error message, if so what is it?
Nope it’s just a black screen

Update Method: CyanLabs Syn3 Updater

Syn3 Updater Version: 2.0

Syn3 Updater Documentation Read: yes

Syn3 Updater Log File

I don't have them sorry I'm on my cellphone and I don't know  how to get them to here

Your using an aftermarket setup now so the normal functions may not work. You might want to go back to the OEM 8" screen and see if it works first with your upgrade. While your at it take a pic of the back of the APIM sticker.

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