yashsingh1/xdaforums huggingface dataset:
[FYT Android Head Units] surfer63:
When you install the GTX custom rom, you first need to replace the recovery image with another one using the custom.apk. Gtxaspec strongly suggests to replace the custom recovery, after having flashed with the gtx rom, with the original recovery.

Did you do that? Or is the custom recovery still in place? If the latter, you are really in a bad position.
[FYT Android Head Units] SuperSalty:
Honestly, since I flashed the HU a long time ago, I'm not entirely sure if I replaced the custom recovery with the original one. Since the HU is showing all sorts of unexpected behavior, I'm assuming I did not replace the custom recovery after flashing.

Since you're already mentioning my most likely bad position with the custom recovery still in place:

Do you have any idea about how I could unbrick the HU with the custom recovery still in place?
[FYT Android Head Units] surfer63:
If you still have the custom twrp recovery in place, you should try to boot into the twrp recovery. From that point you can reinstall the gtx custom rom (see post #627)

Booting the unit into the twrp recovery might be a "trial & error" atempt. See for example https://www.droidwin.com/boot-android-device-twrp-recovery/

If absolutely nothing works, there is still a way to do this but I can't help you with that. You need to open your unit and reconnect/resolder "some contacts". That is also how it is done by the manufacturer on a new, "clean" unit without anything on the unit.

It has been described somewhere in this forum about 4 years ago (I think). It has a special name but I can't even remember that one.

So I guess you have to do some serious googling.
[FYT Android Head Units] antvic:
Hello everyone. I do not understand step 2 for installing the custom ROM.

How do you do that from the ADB?

Can anyone help me with images or videos?

I am very interested in this ROM. I've installed custom ROMs in the past on drives with Rockchip 3066

My Unit is "Joying JY-UMS03N"

""Step 2. Use the Android helper application "custom" to install. Download from link below, either on the Head Unit itself, OR on PC and transfer using ADB. Once installed, open the program, and grant superuser privileges when prompted, you'll be presented with screen as here:""
[FYT Android Head Units] surfer63:
Links in the bottom of post 1: custom_4.9
[FYT Android Head Units] slakosd:
V9 ALPHA 3 working fine on my Joying Sofia!

Is neccesary to update the installation instrucctions... because they are terrible confusing. But anyone who have experience with these hacks should be able to root the head unit, install the custom apk and install the rom.

Thanks you a lot for your work.
[FYT Android Head Units] dbmgreen:
Wrong place
[FYT Android Head Units] bonisaw:
Needing some help here... my unit is a JY-HM121N2, FYT Sofia 3GR.

My unit was working flawlessly for about 3 years and then the software crashed while I was driving. Ok, no big deal I thought... wrong. GPS stopped working, apps wouldn't open anymore, even the Settings wouldn't open anymore. Tried what I could but without any app working or the Settings, but I couldn't really do much.

Did a full re-flash with stock then GTX (clean) via Custom. Seemed to work at first but Google services were crashing or not working properly (error 504)... Tried some more, tried to re-flash GTX via TWRP and all but something must've gone wrong.

Now it boots, but there's no launcher, just a black screen with the top with clock/etc and the dropdown works, but Settings does not. Can't launch any app if I can't reach them and ADB doesn't seem to work...

I can force it to flash from the thumb drive using the USB keyboard trick. However... I cannot get it to flash anything anymore as I get the infamous 5009_60.zip signature error.

Stock flash - signature error.

GTX flash - signature error.

"Recover" via 3 reset - black screen with the pink buttons, don't see anything happen other than multiple reboots but no changes after waiting for quite some time. It boots after a while but same behavior.

The screenshot is from before my last flash when things blew up.

Sorry to bother but let me summon the gurus @surfer63 @gtxaspec

Any ideas? Thank you...

UPDATE:

Well, after 3 days I managed to do it through a stupid way which actually worked.

1. Flashed the wrong MCU (5.25) to my 9.20 unit.

2. This forced my unit to show the MCU upgrade app post boot

3. Flashed a "bad" 9.20 MCU (because the original Joying one gave me the yellow bar)

4. When I clicked the magnifying glass to look for a MCU upgrade file, it actually opened the FIlemanager. From there, I could locate and install then run Custom.apk, which means I was able to install TWRP and then flash GTX back.

5. After reflashing GTX I managed to flash back my good MCU that Joying sent me to fix the yellow bar.

Great success!

I still get the 504 error if I try to install most apps on Google Play though. Trying to solve that one now...

UPDATE 2:

The 504 error went away when I reflashed GTX with a newer GApps, but I still couldn't install a few apps like Gboard or Swiftkey. It'd just say it failed to install after the download. So I had to install an alternative "playstore" *cough* xxxoide *cough* and from there I was able to install another keyboard other than the default (ended up installing Multiling because of the many configurations possible, the touch at 10% screen bottom is dead).
[FYT Android Head Units] BadRsT:
I can’t install it… when I try to do“install custom” the display show me: “you need to be at least AOSP build” please help me!!! I have an Intel Sofia3gr Rockchip RK30SDK

MCU: FY_90_C9_7703_18EM_JY2009B

Livello di patch di sicurezza: 01-06-2016
[FYT Android Head Units] surfer63:
English please !

Your MCU and firmware is too old. First update that.

Note that there is no support whatsoever anymore for this old GTX rom
[FYT Android Head Units] BadRsT:
I don’t know where I can find an update for that… can you help me?
[FYT Android Head Units] BadRsT:
I installed the GTX, but I have a problem, it crashes on startup: apps optimizing 1 of 57
[FYT Android Head Units] BadRsT:
how can i solve?
[FYT Android Head Units] surfer63:
Cool your unit. This optimizing of apps is necessary, but make these Sofia3GR units extremely hot. If the CPU is going too hot, it stops or reboots.

Take the unit out of the dashboard but leave it connected and start it again. Use a fan or hair dryer on cold to blow over the CPU during this optimizing step.
[FYT Android Head Units] BadRsT:
It started up but after finishing the optimization almost all the apps crash ... plus the audio is not heard .. is there any way to restore it from the stereo controls?
[FYT Android Head Units] surfer63:
Sorry, but:

I have no idea what you did.

I have no idea about your original firmware or reseller id.

I told you your firmware was too old (actually the installer apk told you) and that you first had to upgrade.

I told you there was no support anymore for this ROM

Having no audio is mostly due to a too big difference in MCU and your com.syu.ms main server apk. Another issue in this situation is that your unit will become terribly slow.

The only thing you can do is download a new firmware from Joying or so and hope that it functions. But the GTX rom is based on Joying so I am afraid that it will not work.
[FYT Android Head Units] BadRsT:
the system is not slow at all, the only problem I have is that the radio doesn't work at all and the audio keeps interrupting when I listen to music from the SD / USB ... I don't know how to solve
[FYT Android Head Units] surfer63:
Are you now on the GTX-Rom or the original Rom?
[FYT Android Head Units] BadRsT:
GTX, but I have the same problem with the original Rom
[FYT Android Head Units] BadRsT:
it's like when an amplifier goes into protection because the speaker power is high, only here I have the original car speakers
[FYT Android Head Units] deriban:
Dear Sirs!

I have the following device in use, from Sinosmart. Recently, this miracle has become infuriating with its slowness. Factory reset doesn't help. Please, tell me how to flash this head.
[FYT Android Head Units] casio58:
Hi have been looking through comments and have the same issue as a few others where my unit crashed and get a signature error trying to flash stock back to it because custom recovery is still partly installed but cant find a rom to fix this as the links are dead does anyone happen to have this so i can reinstall stock and start again as unit is currently stuck on android logo and cant do anything with it many thanks
[FYT Android Head Units] blitzcat:
just want to express my gratitude to @localos , the internet error, caused by certificate error, caused by wrong time & date, caused by improper gps time sync, now has been fixed using this solution:

https://xdaforums.com/t/joying-inte...s-not-obey-network-time.4286581/post-85577873

After installed, the app will keep running on background, and it will auto close after few seconds.
[FYT Android Head Units] casio58:
If anyone able to help with this it would be much appricated
[FYT Android Head Units] blitzcat:
What's the unit model? Have you tried to send email to joying support for the firmware?
[FYT Android Head Units] casio58:
Hello I need this rom if anyone has it would be very grateful
[FYT Android Head Units] ratdude747:
I've had a bit of an issue and not sure how to proceed. My headunit is a knockoff (cheap thrift store find, NIB) with the FYT6021 SOM.

Installed this ROM several months ago. In the middle of around town, it seems that google play services was corrupted as I'm constantly getting flooded with "Unfortunately, Google Play services has stopped" messages. I've had zero luck trying to manually install the x86-64 (or x86, I tried both) apks... "app not installed".

Any app dependent on google play services crashes a couple seconds after launching (sometimes with the "Unfortunately, Google Play services has stopped" message)... which includes the stock android settings app. Other apps affected include (but not limited to) Waze, Cloudplayer, Musicolet, Youtube, and cx file explorer (Amaze file browser does still work). Lots of random Nova launcher resets during the first minute or two booted up (but eventually stabilizes). No issues with my TPMS app, any of the Joying apps, or Torque pro.

Likewise, I've tried to re-install the rom (use the tool to re-flash recovery and then reboot with a flash drive with the files plugged in the front)... all it does is reboot the system, doesn't even try to install (however, not flashing the custom recovery does produce the signature error one would expect). Short of trying to flash the stock firmware and starting over entirely (attaining root, etc.) or changing head units, is there anything else I could try.

Edit- tried the keyboard trick after installing the custom recovery... all that does (as does some random power cycles) is give a black screen with the button backlights pulsing purple for a few minutes before finally booting normally. Seems like I may have a hardware issue regarding the flash storage... cooked itself crispy?

PS- I modded the unit to have a dedicated cooling fan today... much cooler temps (in bench testing at least) but no change in the current situation. Hope I didn't fry the SOM...
[FYT Android Head Units] casio58:
If your unit is the same as a joying unit use the 3 button reset with the reset pin hole and reinstall stock should work from there
[FYT Android Head Units] ratdude747:
That worked for getting me back to a stock image. Was able to root it (wifi-ADB method).

But, the custom app doesn't seem to be installing TWRP (or I am not able to boot to recovery)... it says it installed, verify says it's there, but both reboot options from the app just have the system reboot normally (not to recovery). Same thing it was doing when I tried to re-install the rom image from the "broken" install.

Both the custom apk and the rom files I downloaded from the first post. I do remember having issues when I went to install this originally... but I don't remember what special thing I had to do to get it to go.
[FYT Android Head Units] ratdude747:
Figured out the strategy:

Install the stock rom.

Use apps to enable ADB over wifi and obtain IP address

Use the .bat script in the first post to get root (do not use the SuperSu method listed in another thread! It breaks something somewhere). Set Superuser to "always grant" (as for some reason I've never been able to allow root access via prompt on this head unit). Launch custom and install custom recovery.

Make USB stick with GTX files. Install rom via the three reset method.

Wait patiently and eventually it will start to update.

Pull the USB stick once the "android" boot logo comes up!

Translation: RTFM... to include how to obtain root!

Edit- still back to square one with google play services crashing things. At least I've been able to use the custom app within the gtx rom to install the custom bootloader and then use the three reset method to reinstall said rom. Seeing if there's a workaround... as it (and anything dependant on it) fails within 5 minutes or so of the intial bootup (not a recent version issue, not updating doesn't help my cause). Worst case, at least I got my $20 out of the head unit.

Edit2- Fixed the original issue by swapping the OpenGapps file for the latest pico file for x86 (renamed file, too lazy to edit the TWRP script :p )... so far, so good.
[FYT Android Head Units] dyabolikarl:
Well had a good few years but it seems my backlight has packed it in. Is there any recommendations for new units or just the newest version of the joying headunit?
[FYT Android Head Units] joooe:
I'm having problems with google play services too with this ROM. How can I flash the latest pico x86 opengapps, without resetting the unit? Is it possible to flash only the opengapps file?
[FYT Android Head Units] joooe:
Ok, managed to install the latest 6.0 pico x86 opengapps, but the problem persists.

Flashed the pico file alone, with twrp. Didn't work.

Flashed the whole ROM file with the new pico opengapps inside. Didn't work.

Help, anyone?
[FYT Android Head Units] koboos:
Hello,

I'm here and trying to figure out what to do with my Sofia 3GR.

I'm now on 5.1.1 firmware.

I've read that android 6 is very unstable, but this rom works only with that version.

But most of the comments about problems after updating to andoird 6 are very old and I'm wondering now if this GTX rom has some improvements and fixes of that bugs.

Generally is it worth to update to 6 and install GTX rom, or just stick with the old firmware?
[FYT Android Head Units] bahha:
Thank you for the awesome Rom.

I have a Chinese clone of an Intel Sofia 3gr with fake android version with 1GB/16Gb .

Recently it started reseting and became very slow .

so I decided to try your rom, after all, I had nothing to lose .

I rooted it and checked in Adb the real specs.

I first tried the temp TWRP, it worked .

I followed the instructions to install but it get stuck every time it wanted to boot TWRP and I couldn't get back to the original OS.

So I reflashed a Joying stock firmware, it worked with a MCU and DVD warnings and an audio cut-off every 10 sec, the radio didn't work .

I finally reboot to TWRP and flashed your ROM. it got stuck on boot animation and a white screen , turned out, it was very hot.

after letting it off for some time , I tried again and it worked fine :)

your Rom fixed:

- Radio works

- no audio crackling and cut off.

-next and back button on steering wheel works on Android Auto playback .(it did not work before) using headunit reloaded .

- no DVD warning .

had to use a tweaker to remove yellow banner about mcu not matching .

so far it's working really well and faster .

Thank you very much for giving a new life to my s**ty HU.
[FYT Android Head Units] pwood999:
You might want to consider the heatsink & fan mods, especially if yours is single DIN. all the Intel-sofia run quite hot. Mine has been reliable for several years since doing this.
[FYT Android Head Units] BBKK1313:
147 / 5 000

Wyniki tłumaczenia​

Tłumaczenie​

star_border

help after update I have a yellow bar and the inscription ui and mcu does not match (key) mcu version:2017-11-16 16:12:01 ZHAN_(_R68)_90_C9_R68_V1.00_CAN(All)_Amp.
[FYT Android Head Units] BadRsT:
Does someone could help me tp finde the right firmware and MCU?
[FYT Android Head Units] arass1979:
Hello, I have a problem, could someone please help me with a step by step solution

step
[FYT Android Head Units] marjanoos:
This is english spoken/written forum. If you want to get help you need to respect the rules.
[FYT Android Head Units] surfer63:
What is your problem? You show errors and also working screens. And one working screen is "normal", the other is in Airplane mode.

So tell us first what is currently happening with your system. Show us screenshots of your current situation.

Even more: Is this even a FYT unit? 90% of the Sofia units were FYT units, but that makes 10% not a FYT unit.
[FYT Android Head Units] arass1979:
After the icons are shown, it turns off after 10 seconds
[FYT Android Head Units] surfer63:
If you did a firmware flash with this custom rom, you might have run in one of the Sofia issues: getting too hot.

On those units, after flashing, the optimization of apks need to take place. But in doing that some units get extremely hot and simply shut down, and then restart the same optimization step. That is when you get the error on your Audi screen where it says "...has not fully launched 3 times...".

If this indeed took place your unit will be very unstable.

Two things to try:

- Remove/unscrew the lid from the unit and restart the unit. Cool the CPU with a hairdryer (or something alike) on "cold" and hope the optimization step will continue.

- If that doesn't work, reflash it again and immediately use the cold hairdryer to cool the CPU during the restart/optimization step. This can take take up to 5-6 minutes.
[FYT Android Head Units] sdjetani:
I am running on 6.01 version can i install rom
[FYT Android Head Units] sdjetani:
I am running software version 6.01 in my intel sofia 3gr. Can i install this ROM ?
[FYT Android Head Units] bahha:
I have the same unit and this rom worked for me. check my post above.
[FYT Android Head Units] arass1979:
it doesn't work for me, it loads halfway and stops and after a while the renewal starts
[FYT Android Head Units] surfer63:
Did you read post #2436? Only 4 posts above yours?
[FYT Android Head Units] arass1979:
well, unfortunately, cooling does nothing, the android loads halfway, the radio turns off and starts again, I have no idea what to do next
[FYT Android Head Units] bahha:
I mentioned before that I have the exact same device and it works.

it's restarting because of high temperature.

after flashing the rom. take of the key fob from ignition and let it off for a while then try again.
[FYT Android Head Units] arass1979:
and I get something like this. What can I do with this
[FYT Android Head Units] surfer63:
do a checkdisk or reformat of your usb-stick. It is corrupt and therefore the zip is corrupt.
[FYT Android Head Units] arass1979:
Umieściłem pliki na karcie SD

jak zrobić dysk kontrolny możesz mi opisać krok po kroku
[FYT Android Head Units] arass1979:
what to do next
[FYT Android Head Units] surfer63:
What kind of unit do you have. Can you post your information?
[FYT Android Head Units] arass1979:
I don't have any data, it's some Chinese radio, I only have these pictures

and what was done with it, I don't know how I got it
[FYT Android Head Units] arass1979:
it comes to this point and resets itself and so on
[FYT Android Head Units] surfer63:
Your photo of the CPU heat shield says that it is a FYT 6023, which is indeed a Sofia 3GR.

It gets too hot. This is one of the weak spots of these older units. It has been mentioned many times before in this thread.

Use something to cool it when you flash it. So use a hair dryer (on cold) or a fan to blow cool air onto this heat shield while doing the flashing and hope it comes through.
[FYT Android Head Units] arass1979:
I already did that and nothing
[FYT Android Head Units] arass1979:
I may not have this software
[FYT Android Head Units] surfer63:
It is terribly old and slow by now.You can't get any higher than Android 6.0.

You better look out for another FYT model: either the somewhat slower and cheaper uis8581a (sc9863), but much faster than that old Sofia 3GR, or the fastest option possible which is a uis7862.

For 170~210 euros you buy a Mekede uis8581a with 4GB/64GB. The Mekede uis7862 4GB/64GB start by 210 euros, unless you go for a M6Pro which are also starting at around 400 euro.

There are also other brands to considere. This would simply be a good choice. Joying is slightly better but also on avarage 200 euros more expensive.

Buy T'eyes if you really want such a unit. Otherwise don't as it contains too much closed software.
[FYT Android Head Units] arass1979:
and what software to download
[FYT Android Head Units] surfer63:
For this Sofia unit? There is no software at all anymore. It is so old that it has long gone out of support.
[FYT Android Head Units] arass1979:
that's what I downloaded from, can you give me a link
[FYT Android Head Units] surfer63:
No, that is what I said. There is no software to download at all. Only this GTX-rom. Not one single reseller has it anymore available for download.

If it was up to me I would ask a moderator to close this thread and remove the download links.

Edit: I just asked the moderators to close this thread and remove the downloadable links from the first posts. The OP/creator also left this forum years ago. The last 3 users only ended up having unrecoverable issues. Why support a completely outdated, not reseller supported T-Ford when you can drive an electric car?
[FYT Android Head Units] arass1979:
and where is this GTX ROM
[FYT Android Head Units] surfer63:
I really don't understand you. It is in post #1 and #2.

If you did not use the GTX-ROM, then with what did you try to flash your unit? And why do you use this thread?
[FYT Android Head Units] arass1979:
I just don't know how and what to do
[FYT Android Head Units] surfer63:
I think you hijacked this thread and therefore put me on the wrong foot.

Let's start again.

Did you try to flash a firmware?

Or did your unit just starting to do this "at some moment"?
[FYT Android Head Units] arass1979:
I don't know such a radio I got

and I don't think the firmware was flashed
[FYT Android Head Units] surfer63:
Again: Did it just start to do this? Did it never work correctly?
[FYT Android Head Units] arass1979:
when i got it it didn't work
[FYT Android Head Units] surfer63:
Then simply forget it and buy a new one. See my anser in #2455.

It is too old.
[FYT Android Head Units] arass1979:
I managed to upload it but when I turn it on it turns off after 10 seconds
[FYT Android Head Units] surfer63:
Buy a new one.

It is so old that it even has a tattoo on its chest: "do not resuscitate"
[FYT Android Head Units] arass1979:
i want to revive it
[FYT Android Head Units] louforgiveno:
Well in that case you might need to do a teardown and replace/upgrade the thermal paste on the processor. It sounds like these units suffer from heat issues so if you wish to revive it start with the hardware side.....clean the boards of dust etc and repaste the heatsink/processor.
[FYT Android Head Units] surfer63:
Not only that. Those Sofia's were "cold soldered". The CPU and also other chips suffered from heat strain (hot-cold-hot-cold) and some of the soldering points break loose. That means that you might need to resolder as well.
[FYT Android Head Units] arass1979:
it will heat it in the FYT6023 oven

still the same thing comes to this place and resets with a cold air cools

when i try to install another rom i get this message

ota package and app package must update same time
[FYT Android Head Units] arass1979:
I will change the SD card from 16 to 8 maybe it will help

but why did it install once only after a while it reset
[FYT Android Head Units] surfer63:
Did you make sure your usb-stick is correct? Did you really do a checkdisk or reformat to FAT32 on the usb-disk?

The newer firmwares check for correct CRC via the signed key. The old ones did not do this yet.