RonS

Here's the BT Firmware that came with the 2013 update. Obviously you'll need to unzip the file. FIRMWARE.zip

None of the newer (modern) head units are plug compatible with the old X910-BT. So whatever unit or brand you decide to buy, you will need to splice in to the car's wiring or find a conversion harness (depends on how the X910 was wired). There is no plug-n-play upgrade solution. I recently wanted to modernize my car which had a Z110-BT (with the latest available Pioneer maps/firmware). I wanted Carplay/Android auto support. After pricing Pioneer and other major brands I decided they were not worth it when I could buy a $200 unit on Amazon from a brand I'd never heard before (Atoto). So

I have no experience with this unit or the process to convert to another language. However I assume that TestMode must be triggered by hard buttons since it must be able to get into Testmode while/before the unit boots. So - did you try pressing - and + while booting? I don't know about those other hard buttons since I don't recognize the symbols. If that doesn't work, I'm sorry I have no other ideas. Sooner or later someone who has done this will see your question and give a definitive answer.

If you searched AVIC411 you'd find at least one link to download the files. See this thread. This firmware should work with most Z and X series.

Moved to Nex subforum

2017 was the last map update for the Z-1xx-BT and X9xx-BT. I'm not sure what link you want but here's Pioneer US/CA firmware & maps: Navigation System Map Updates

o No. This is not compatible. This firmware is for much older units.

It is permanent unless another password gets set. Some original owners swear that they got locked out and never set-up a password. So keep the files in case you need them again.

Before doing anything major I'd try switching to the backup firmware. The AVIC headunits have to firmware copies. So whenever the firmware is updated, the older one is preserved. The one that gets executed at boot time is controlled by whether PRG.FLG exists. You can force it to use the backup version using that file. Boot into (Super)Testmode. Navigate to the USER directory. If a file named PRG.FLG exists, delete it. (it is just an empty file). If PRG.FLG doesn't exist, add one by creating an empty file on your PC, copy it to the TestMode SD, then boot into TestMode and copy PRG.FLG

If it's so easy, why not just post the method here so everyone can benefit? I can think of one reason, but since there's already posted some free fixes, there's not much profit to be had.

First, its not clear what file you are referring to. Mine, or the pionara post immediately above yours. Regardless, the files are still available, but you must be registered to download files hosted on avic411. Since you are now registered, try again.

Bluetooth issues have been known to happen after the BT update. Often they are fixed by disconnecting the car's battery for 30 seconds. In my case (Samsung Note - Android) I had to go to an older version of the BT firmware from the 2013 update.

Since this was a pre-installed headunit I have no idea what the previous owner might of done to hack it. If it is running some hacked firmware like Condi's Hackmode, I can't help. Remove anything in the SD slot behind the screen just in case. There's no other user replaceable SD within the unit. Normally, the SD is just used for playing media files (audio and movies). It is also used to install firmware and boot into TestMode. It isnt necessary for normal operation. These units don't ask for an update on their own. There's no external data connection. So if it asked to update something, i

Has this unit ever had a map/software upgrade? Some functions will not accept input if the parking brake is not detected. It sounds like you are saying that you can select the language so it might not be a parking brake problem. Just some random things to consider: Did the thief disturb and of the electrical wiring? Is there an anti-theft system in the truck? Did you have aftermarket HIDs installed? Did it ask you for a password when it booted? IIRC, the headunit only asks for language selection on a full reset. Disconnecting the battery only resets a few things. but not the languag

Please describe the exact problem and how you got there. This isn't a common problem AFAIK. Is this the first time you've upgraded? Also, is the parking brake set (or the parking brake been correctly bypassed)?