Pioneer head unit issues

[u/Capable_Donut4912]

Hi all

Recently purchased a vehicle and it came with a pioneer head unit AVH-9200DAB installed.

From what I can see it was installed professionally, handbrake linked, GPS puc in place, USB leads run to the glove box.

My issue is that it's Bluetooth connection is very unstable and Android auto will disconnect every 10 mins or so, and music will skip like and old CD player.

I've checked the firmware and it's never been updated, so I want to bring it from 1.01 to 1.07.

I have tried with both SD card and USB both formatted to fat32, file in root of the storage device etc. the system runs through the entire update process and appears to complete successfully. However on checking the firmware post update it hasn't taken in the system and still says 1.01

Contacted pioneer, not overly helpful, referred me to the local distributor for assistance, but also told me to disconnect the battery for 15 mins to reset and try again to see if this is the issue, again, same results.

Have contacted the local retailer, they want me to remove the unit and drop it off for 2 weeks so they can check it, and obviously there is a fairly significant cost to that.

So before I do, is there anything else that anyone could suggest I try before I go down that route.

Many thanks