Sorry I can't help, but for people who can it would be helpful if you said exactly which version it is. I know that UK and US versions differ and there are at least two different units on different current models in the UK, with some older ones too.

 

Oh my bad.

not sure what you mens with which version, but the car is bought Scandinavia

 

Usually they have a way to reset to factory default and boot from version burned at the factory. Just need to find out how.

 

Maybe disconnect the fuse for the head unit ( if you can find it ) , leave it it about 30 minutes or so and reconnect the fuse ?

 

I am not that familiar with car hardwares any idea how I can find it ? I can tell that I have had the car run out of 12 v battery and it had to be jump started. If that’s anything like a fuse reset?

 

ok i found the instruction manual and the section about fuses,
found this;

FUSE: IG3 2 10A IPS Control Module, Main Battery Charging Switch, Charge Lamp, PTC Heater, A/V & Navigation Head Unit, Instrument Cluster, A/C Control Module, Audio

it wont damage anything if i found it and took it out and in?

 

but in another note. they have ordered a new head unit for me, delivery in 2-3 weeks or something.

 

In which case I can see no harm in pulling the fuse for a little while . If it works you'll be OK until the new head unit is fitted . End of 2016 and beginning of 2017 Hyundai identified a fault with the head unit . They recalled mine and fitted a new one even though I'd had no trouble with it

 

Look, I'm working on software for the HU of another brand of cars. When we wanted to do a recovery of a bricked HU, no one involved with development knew what to do. The usual procedure was to take it back to the supplier of the HU (Harman).

Eventually, someone read too much and discovered that when two pins of a given D9 plug in another ECU were shunt, the HU would boot into an emergency recovery version of Linux and we could flash from there.

My point is that it is very hard for someone outside Hyundai or the supplier of the HU (maybe also Harman) to be able to help you. This is very complicated, it may involve many ECUs at once, not just the HU... Can you even discover the IP address of the other ECUs that work?

You really must take it to Hyundai, and it's a PITA for them too, because it's complex and tricky, and they can't simultaneously be experts on oiling your doors, and cleaning the AC ducts and flashing your HU.

 

Look, I'm working on software for the HU of another brand of cars. When we wanted to do a recovery of a bricked HU, no one involved with development knew what to do. The usual procedure was to take it back to the supplier of the HU (Harman).

Eventually, someone read too much and discovered that when two pins of a given D9 plug in another ECU were shunt, the HU would boot into an emergency recovery version of Linux and we could flash from there.

My point is that it is very hard for someone outside Hyundai or the supplier of the HU (maybe also Harman) to be able to help you. This is very complicated, it may involve many ECUs at once, not just the HU... Can you even discover the IP address of the other ECUs that work?

You really must take it to Hyundai, and it's a PITA for them too, because it's complex and tricky, and they can't simultaneously be experts on oiling your doors, and cleaning the AC ducts and flashing your HU.

thanx for the reply my dude.

and yes hyundai will replce it with a new one, and its gonna cost me around 300 euros. i accept it.
just thought maybe there were some way to reflash it. someone wrote on a comment on youtube regarding bricked HU, that a russian guy was able to solder on the pcb board and reflash the system and androoid system too. so yea too much of a hassle. few more weeks and hopefully a new HU will be delivered to me.

 

You was very lucky they were able to help you, Ice Creams to those who did!

 

i FREAKING FIXED YOU GUYS!!!
Sorry i had to create a new account, i just couldnt remember which email i used for my SonicSpinner account.
anyways! i saw a post on reddit on some dude writing that you can connect a usb keyboard to the car and press ALT + PRINt + E, it will then bring your a failed update message screen. then diong CTRL + ALT + DEL few times, brings your erro messages and at the end an option to revert the update back to its original fw!
i have all my 3rd party apps and eveything in tacts. all working! even hyundai dealer didnt know S*** about this.,
OMG ii am so pumped. 2 months without a head unit! no music no nothing, finally back!

 

i FREAKING FIXED YOU GUYS!!!
Sorry i had to create a new account, i just couldnt remember which email i used for my SonicSpinner account.
anyways! i saw a post on reddit on some dude writing that you can connect a usb keyboard to the car and press ALT + PRINt + E, it will then bring your a failed update message screen. then diong CTRL + ALT + DEL few times, brings your erro messages and at the end an option to revert the update back to its original fw!
i have all my 3rd party apps and eveything in tacts. all working! even hyundai dealer didnt know S*** about this.,
OMG ii am so pumped. 2 months without a head unit! no music no nothing, finally back!

I can't believe this, this is so exciting man Thanks for showing this. I knew there had to be a safe way to go back but was hidden. Good job!!!

 

Wow you were lucky there! Well done for your perseverance. Maybe start a new thread titled "What to do if you brick your head unit" with step by step instructions of how to fix it.

Really pleased for you. It's an expensive brick on wheels otherwise.

 

Thanx buddy! perhaps i will create a new thread for that. Thing is, that its kinda difficult to do a detailed step by step, since you cant properly see the screen. but its possible for sure.
uff i am so pumped. even connected my jailbroken iphone and unlocked the carplay to the fullest. no restriction, all nativ apps showing on the infotainment etc.

 

Hi,
Pressing the first combination ALT +PRINTSCR + E gives this display:


The second combination CTRL + ALT + DEL just reboots to logo

My headunit seems bad healthy

 

Deleted

 

Don’t give up, it’s correct. Keep going on. I also got that screen.

Did you manage to fix it?

 

Don’t give up, it’s correct. Keep going on. I also got that screen.

Did you manage to fix it?

Hi Sonic,
Yes, It functioned
Even if I tried dozen times ... I thought it would never happen !
I'm sorry, I can not explain what was the good process because I left to discuss a few minutes with a neighbour; when back, a new screen said : retry or recovery. Then I selected the second option

Happy to get out of this story, thanks for your help

 

At the dealer for a full annual control.

In the process to pay and waiting the end of AVN update, I realized the car's book stayed in the car.
Opening the door, the air conditioning and the fan was at the maximum ....
Just a reflex, I shut down car's power !

Started 15-20 mn before, the process update should have finished with system and firmware, pretty sure the cut occurred when GPS update.
Because the recovery went back to the last software and firmware revision without any GPS available version .
Now, I still need to update this last part, hope it will be simple procedure.
Cheers

 

oh wow, thats crazy. let us how it turns out!
in my case, a fw update at the dealer 2 weeks after i bought the car . the fw upgrade went bad, because i had 3rd party apps installed on the headunit i didnt know about all this at that time

dealer havent seen this before, no one knew what to do , besides ordering a new HU from korea, on my bil!
2 months and still waiting no news from delivry of a new HU. so i searched the net, untill i found a dark dark place, where a linux tech dude, used this commands pretty randomly and managed to reverse the faulty fw upgrade.

the rest you know

oh and i cancelled my order of the new HU

 

Me too, some 3rd party apps were installed: easytouch button, YouTube, tvtap pro, etc. ...
I didn't know there is need to uninstall them before AVN update ....

 

?

 

bro I've tried now but only works the ctrl alt del he restart, but if i type alt+e+print nothing happen... What should i do?

does your head unit gang in the logo? or does it hang at start up / welcome text ?

 

@Fredjpina
It should ...
Try this combination ( with ALT and not ALT GR ) after a HU hard reboot ( a pen in the small whole )
Stay confident, it will work ?

 

Read this whole text i wrote on another post:

Hey guys,

So due to popular demand ( I suppose ) I will describe what i did in order to unbrick my headunit in my ioniq ev 2019.
A quick summary of why my HU died. Like other car nerds I installed different apps on the headunit, through the hidden service/android menu.
Days later i went to my dealer and asked them to update to the latest software. ( I didnt know back then that the latest sw blocks the hidden android menu, )
after the upgrade the headunit went into boot loop and the dealer didnt know what to do abou it.
I spend weeks searching the internet to the deepest of the deepest sites to find any ways of recover it. Untill i saw a thread on reddit on this guy who accidently or randomly tried some keyboard commands on the car.

So the method is:

Plug in a usb keyboard to the front usb port of the car. and turn on the car. Then repeatedly press ALT + PRINT SCREEN + E. This will take your head unit into forced firmware update (I think). After doing it repeatedly the unit told ME that it was doing firmware update (but no usb with update was plugged in). To another person in another forum that had the unit bricked it told him (after several presses) that there was an issue with his firmware and to rollback. Everytime you press the combination, the touch stops responding, after a couple seconds it reboots. If you press the combination BEFORE it boots you will see weird lines on the screen. It will restart itself. If you keep doing it, it will eventually tell you that its a firmware update or, in the other case, will tell you if you can rollback the FW. CTRL + ALT + DEL will reboot the unit (Tested on a Hyundai Ioniq hybrid early 2019 EU and Hyundai ioniq EV 2019. EU )

Another guy on this forum " Koln Bonner " added this info in Germany: This could be important for those who can not make the key commands i mentioned to work.
-------------------------------------------------------------------

Falls die oben stehenden Tastenkombinationen nicht funktionieren:

Von Linux kenne ich folgendes, wenn gar nichts mehr geht: ALT+Druck/SysRq halten, und dann langsam REISUB schreiben (alle 2 Sekunden ein Buchstabe).

Das führt nacheinander folgende Kommandos aus: "unraw" (Kontrolle über Tastatur übernehmen), "terminate" (Kommando an alle Programme schicken, dass sie sich beenden sollen), "kill" (alle Programme beenden), "sync" (Daten aus Cache auf Festplatte schreiben), "unmount" (alle Dateisysteme nur lesend mounten) und "reboot" (sofort neu starten).

Da das auf einem niedrigen Level im Linux Kernel implementiert ist, der auch von Android verwendet wird, gehe ich davon aus, dass das auch geht.
----------------------------------------------------------------------------------------------------
Google translated:


If the above keyboard shortcuts do not work: From Linux, I know the following, if nothing works at all: ALT + PRINT, and then slowly write REISUB (every 2 seconds a letter). This executes the following commands one after the other: "unraw" (take over control of keyboard), "terminate" (send command to all programs that they should quit), "kill" (quit all programs), "sync" (data from cache write to hard disk), "unmount" (all file systems mount only read) and "reboot" (reboot immediately). Since this is implemented at a low level in the Linux kernel, which is also used by Android, I assume that this is possible.
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



Anyways, hopefully you guys with the bricked headunit get it to work again. Another tip is, MAYBE i was lucky i made it work, the trick is sometime to wait.
when the scramble screen comes, i think its doing something in the background which you cant see. maybe a count down to roll back. try and leave it there for 1 min or something. then CTRL + ALT + DEL. This was few months ago for me, so i cant remember exactly. but I think the menu with " roll back Yes - NO " was barely visible in the scrambled screen.

Good luck!

 

ALSO Try ALT ´+ PRINT + R E I S U B

 

s

 

Ok

 

 

Did you try alt print REISUB

 

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