[Android Head-Units] kaween:
AN21-U gone belly-up.

The original MCU (that worked, and was lost because I was told by my seller to flash a new firmware) was 4.2.5-1-10-6101. My seller doesn't even seem to believe me when I told him this, but I do have a screenshot of that version on my unit. I used 4.2.7-11-10-6501 . Using that, the EQ worked perfectly, but the sound rotary know did not function correctly. All other functions (BC6 support, Color LED, correct Tuner and amp versions) worked correctly, of course due to the wrong hardware revision, the not-working rotary switch comes as no suprise.

Anyhow, the whole AN21-U adventure has come to an end today. I suffered a massive failure of the system while driving.

It began going wrong driving off the car park : the Reverse Cam image was NOT being shown. In fact, the radio didn't see I had put the car in reverse at all. I switched of the radio and rebooted : now the Reverse Cam image was clearly seen ... AND IT REMAINED SO after I put the car in forward gear ! (My Reverse Cam gets its power from ACC. Reason : with my old Unit, I could choose between inputs no matter what, and I liked the option to be able to switch to Reverse view even if I did not had the car in Reverse Gear).

I started my trip home, and after 2 minutes or so, the reverse Image disappeared and my launcher screen could be seen. I started my Navi program, and selected my home adress.

A couple of minutes later, the Navi software froze, and the GPS fix was lost. At a red light, I tried to close Igo. The result was a "application has ended unexpectidly ...." error, and my system returned back to the launch screen. HOWEVER, the frequency of the Radio tuner was shown as "0000", and the radio failed to start ("Radio has closed" error). So did EVERY other Android software.

I decided to reset the unit. The result of that was a complete WHITE screen and a very loud static hiss coming from the speakers. Resetting it again produced the same issue, Pressing the power button did NOT shut down the unit anymore. In the end, I had to put the car at the side of the road and I had to pull the fuse that provides the radio with power.

After coming home, I again tried to boot up the unit. This time, I could hear a radio station in the background, but the screen remained white directly after power up. ( h t t p s://www.youtube.com/watch?v=ZoiTkibBB9Y&feature=youtu.be ). I removed the unit from my car and tried to boot it from my electronic workbench : same result.

After 3 hours of trying to get the radio to boot, I (don' t laugh) put the unit in a plastic bag and put it in my refrigirator to see if temperature would have an influence on the problem. Sure enough, after 30 minutes in the fridge, the unit DID come back to life, but it crashed again after 20-or-so minutes of working, returning me that white-screen-issue I've come to know all too well.

I've removed the AN21-U from my car and have put the S150 back that I was planning to donate for free. The S150 always worked perfectly but I was tired of its limited possibilities,its' odd quircks in terms of software compatibility caused by the old and very limited Android version, its' terrible resistive screen, its' ... acid... behavior when it comes to BT and adressbooks. :laugh:

But I was very glad I still had it around now.

The AN21-U must be returned (and I admit, I do NOT have a good feeling about that ...) as it has become totally unusable after having worked perfectly for the first week or 3. That is really sad, I hope it will turn out okay in the end but I do have a bad gutfeeling about this whole situation. The weeks where the AN21 did work correctly were great though, and I really like(d ?) the unit.

I'll let you know how it plays out.