[FYT Android Head Units] kampfschachtel:
Still having massive issues becasue my unit is still bricked. Unit just shutted down while driving and suddenly hangs in the boot with the "cannot into system UI" shown., so unit softbricked

I was on 14 March release and the unit was delivered to me with the 22nd february release (why i mention this see below)

Tried to do a resore via USB Stick but (in total 33 trials and about 22 hours work with 5 different USB sticks, i am getting pissed with the joying):

1 ) with 14 March release: plug in the USB stick, update starts but no mcu update, just start with android guy and after 5mm progress bar the update stops and units shuts off. reset causes exactly the same behaviour again

2) ok then I tried to update it with 28 March release plug in the USB stick, update starts but no mcu update, just start with android guy and after 20mm progress bar the update stops and units shows "former update is not finsihed" ????? and doesn't do anything. reset starts the same process over and over again.

Unplugged the joying from the harness and let it sit for an hour without anything...update process the same

3) then I came to the idea, lets try the unit delivery release, 22nd of february: USB stick in and MCU update starts and runs through correctly (WTF joying what is this????) and also the progress bar runs fully through and blinks at the end BUT then the unit shows a black screen and frist 3 lines and then one line (lines are 1mm thick) runs vertical through and this for hours. Let the car on igition and the joying on and after 13 hours still not done.

4)Unplugged the joying from the harness and let it sit for an hour without anything connected (=no power)...update process the same. After progress bar is finished the USB stick shows activity for about 1min then no sign of live. Done this about 6 times, always same result.

5)next try: Unplugged the joying from the harness and let it sit for an hour without anything connected (=no power). Then put 22feb release stick on, let the update run through till progress bar is done and unplug the USB stick. Screen went black. After reset joying shows frist 3 lines and then one line (lines are 1mm thick) runs vertical through and this for hours. Done this about 4 times, always same result.

6) next try: Unplugged the joying from the harness and let it sit for an hour without anything connected (=no power) . Then put 22feb release stick on, let the update run through till progress bar is done and unplug the USB stick. Screen went black. Then I put the 28march release stick in and it starts flashing, screen goes black and stays black and after 1 min usb stick stops flashing, waiting and nothing happens for aprrox 1 hour. Reset and the joying boots and shows "optimizing 1 of 31 apps", while optimizing app 1 the joying crashes again. reboot and gets hanging in the boot animation.

=> if I put in the 28 march release then see 2) over and over again

=> if I put in the 22feb release then see 3) or 5) or 6) depending what I do

either it is hanging in the boot animation or I have a black screen with the vertical running lines BUT no working joying unit.

And why is the 22nd feb release updating the MCU even if I was on 14 march???

Release soft downloaded from joying webpage, the 1024 resolution version.

https://www.carjoying.com/blog/joying-head-unit-after-sale-support/59.html

All sticks are:

- Formated in FAT 16 (22nd Feb/28 march release) or FAT 32 (22nd Feb/14 March/28 march release), the 14 march USB stick was the one I made the update after I got the unit and this ran through correctly without any mistake and was working for 3 month without issue.

- checked in mac/linux for if ok/faults before soft put on=> all ok

- then put release soft on => here I unzipped it with IpackR in MAC or with 7 Zip in Win from the harddisc to the USB and also unzipped it first on the harddisc and then copied all files on the stick (in Mac and win, tried both)=> no change in result

- checked in mac/linux for faults after soft put on=>all ok

SO it cannot be the sticks are faulty or the download is faulty as everything was ok and same failure on 5 sticks isn't possible.

So what to do next??????

Please help....