This is what happen to mine 4000NEX

I currently  have 1.08 firmware on the unit n when i try to update to 1.11 by SD memory, everything seem OK until I hit "START" on the screen.

nothing shows up but the unit reboot and shows "software error" n just brick my unit.

i have try to disconnect battery power or hit reset, but nothing work.

plz help me if you know how to get this fix!

i am so regretted for what i did. should never update firmware when isn't necessary.

You might have to send it in, but try putting the Update on a USB stick like you did on the SD card, and see if it finishes

Make sure you downloaded the right update for your model and that when you transfer it to the USB its the only folder on the stick.  Then print out and follow the directions to the letter.  Good Luck.

just want to double check again

is the file supposed to be like this?

only one folder called "AVIC5000NEX" under the root of USB stick

Yes, the ONLY thing should be in the USB stick is that folder

This exact same thing just happened to me with my AVIC 8000NEX, exactly as Franky described in his first post. I made it through the update prep and all just fine and when I hit "start" the head unit rebooted and gives the same "software error" message.

I followed the instructions on Pioneers site precisely. I was using a USB stick, on USB port 1, fresh format, FAT32, bluetooth turned off and audio turned off all per Pioneers instructions.

Anyone fix this issue? I think i just bricked mine too. 
 

I just tried updating to 1.11 and it failed.

HELP

Thanks in advance!

Ok I was able to get it to flash, used a different flash drive. 

On screen it says flashing 1.11 to 1.11, then unit does the update, but after completion, when you go to settings and check system firmware its still at 1.03.

Do I need to go to 1.08 first then to 1.11?

can be directly on the 1.11