yashsingh1/xdaforums huggingface dataset:
[FYT Android Head Units] surfer63:
Question from me as I don't get an answer from Mekede.

I don't have a reverse camera, but every time I put my car in reverse I get a black screen with "no signal". On my previous Joyings I had to cut a wire to stop this behaviour. I thought I had read that this is a setting in the uis7862 units, but can't find it back (neither on 4pda). And went through literally every setting on the unit (some are so badly translated that if you don't see a result of setting it ON/OFF, you still don't know what the setting is meant to do)

Anyone?
[FYT Android Head Units] crocedelsud:
Hi I put the file lsec6315update and config.txt. Now I ee flipped the screen as I go back to horizontal? please help
[FYT Android Head Units] surfer63:
Then you didn't modify your own config.txt, but another one. I specifically mentioned "Add or update the lines in your current config.txt"!!

Do you still have your original config.txt? If so please share it here.

It contains a line "ro.sf.swrotation". What is the value in your own original config.txt, and what do you have now in your (elsewhere copied) changed config.txt (if you even have it in there)?

Normally it should be "ro.sf.swrotation=90" as that is default on all units, apart from Tesla style (0) and Joying (270). (And default to 90 because it still thinks it is a phone in portrait mode without auto-rotate, so rotate it it 90 degrees to get it in landscape mode)

Edit: Also add your modified config.txt (renamed to modified_config.txt?)
[FYT Android Head Units] crocedelsud:
no i don't have the original config unfortunately how do i proceed? thanks I put the isec update file and in the config I put these values persist.sys.zlink.mic.vol = 9.9 persist.audio.mic.senstivity = 1 persist.btmic.gain = 10 persist.btspk.gain = 7

do I create a config.txt with these strings?

ro.product.locale = pt_BR

ro.sf.swrotation = 90
[FYT Android Head Units] surfer63:
Try attached config,txt. It is a general purpose one with improved microphone settings.
[FYT Android Head Units] BlackJettaMk6:
Hi surfer63,

Thanks for ur comprehensive guide.

Im on navifly 7862 headunit, however when i flash the firmware for medeke m300s-700s update, i always get this “UI and MCU does not match!(YIN)” error message. Refer to ur thread about changing manufacturer id through script but then when i run ur script i get into this error message when updated “Pls use lsecxxxupdate latest version 2022-07-02”.

Appreciate if u could help me out
[FYT Android Head Units] Specy01:
I have a Navifly M700S, purchased in August. Until yesterday everything was fine, everything worked great, I also installed the NaviRadio+ app but I did not uninstall the original radio application. I also have the DAB USB interface suggested by the seller with the Dab Z app. I use the UI22. For the internet connection I use the hotspot of my Huawei P30 and until Saturday everything worked great.

On Saturday I noticed that the navigator (in the box on the right of the home) no longer showed the map, but I did not pay much attention to it. Sunday having to go on a trip I realize that the Maps app no longer works, both without internet but also by connecting the M700 to the internet through the hotspot of my phone. I also tried with my son's Iphone but there was no way to make the internet go on the M700S. The Maps app doesn't accept any destinations and doesn't work at all. At this point I decided to reset the M700S by means of the appropriate hole at the top left. Despite this, the navigator does not work, does not accept the hotspot of my phone and Naviradio+ does not work.

Someone has some solution please.

I forgot to specify that the rear camera works very well.

Excuse me for the long post but I wanted to give as complete information as possible. Thank you
[FYT Android Head Units] m00n61:
You have updated to a post-July 2nd system. Use the lsecupdate that came with the mekede update to run the script.
[FYT Android Head Units] Specy01:
I apologizes for the long post. A little while ago I solved. I do not know how it happened, but the M700S had lost Google credentials so obviously did not enter the internet and did not open the Maps application correctly
[FYT Android Head Units] surfer63:
Try with the lsec6315update from the firmware you flashed your unit with.

Edit: And it was just answered before me by @m00n61
[FYT Android Head Units] jimw1024:
The limitation is due to the 40 bit physical addressing or how many lines of address space the board maker wants to pay for.

https://developer.arm.com/Processors/Cortex-A55
[FYT Android Head Units] Petarkco:
Does anyone have the default dpi setting. I was playing around with it but I don’t know what the default was.
[FYT Android Head Units] DexterMorganNL:
Does anyone know how to select the car launchers that can be downloaded from Mario Dantes collection? I couldn't find the one I installed in factory settings, so I guess I need to select it the way I did with AGAMA Car Launcher?

Oh and also: wireless Android Auto has a nice by effect, it corrects the time and date. Although it stays in a loop, so you would have to restart the Carlink app manually.

It's still a bit annoying though, because I wanted to not need to touch the screen during driving a much as possible. Now I atleast need to restart Carlink, because Android Auto gets a error when time and date is wrong. Also it can't connect when you are using a VPN.
[FYT Android Head Units] Specy01:
I have a problem with Google's Maps app as explained in my post in quote. Does Google Maps work if it's not connected to the internet? I saved the map (probably only of my neighborhood because of a few megabytes) on the usb stick, can this give problems? Every now and then I can't connect my P30 to the M700S with the hotspot, I can't figure out why, does anyone have any ideas.

Maybe I'm wrong to turn on the hotspot so I'll explain how I do: on my P30 active the hotspot, while on the Navifly active the WiFi and so you should connect automatically, obviously I have already entered the pasword of the hotspot. Am I doing something wrong?
[FYT Android Head Units] surfer63:
Google Maps does work offline if you have the map offline of your current location.

And what do you mean with "on the usb stick"? Do you mean on the unit itself?

Maps stores its offline maps internally in its /data/android/..../ file structure in some incomprehensive way. You can't copy it from one phone/unit to another.
[FYT Android Head Units] aiui:
if you please
[FYT Android Head Units] Specy01:
If I remember correctly, but I could be wrong, when I saved the map offline, he asked me where to save and I pointed to the 64GB usb stick that connected in the USB port number 2.

It's really strange, lately sometimes it connects to hotspots and other times and this it does'nt in a completely random way.
[FYT Android Head Units] voxmagna:
My noname head unit has all the characteristics of the Joying set out in Surfer63 s first post - fantastic information, thanks I am learning a lot but these are my frustrations:

I have a working OE recovery image I can put on a flash stick. Their folder contains XV6 SYS, MCU and APK. The zip is headed 6315_1 so I guess this is the right thread for me. This uses the update installer so I'm now familiar with waiting until the USB is discovered and puts up the accept window (first trap!).

I tried to use 'Universal backup' explained here. Some script ran through, but nothing was saved on the source flash drive. I grabbed a photo of the message in red but I don't understand it?

Can anybody explain why I can't get a Backup folder created with the files?

I manged with some difficulty to root this box and browse root files, but I can't delete anything in the system folders (write protected) Surfer63 explained that Android10 with dynamic partitioning effectively stops any mods in the system area if I got it right? I have some 3rd part apps packaged by the OE which I want to remove to recover memory. But it seems impossible without rebuilding the rom.

I would also like to delete Google maps, but I'm hitting the same problem of write protected files, is there any way of changing file permissions?

Thanks
[FYT Android Head Units] charackthe:
In my headunit I no longer can skip songs from the steering wheel. It crashes. Here's the log

Also

Automatic start and stop ( ?? )

In the OP is translated as "prevent turning off when start/stop system is engaged" in my unit. Probably that is what it does.

One last thing, can I use the launchers for a portrait "Tesla" style headunit?
[FYT Android Head Units] jawbraeka2:
Hi..

Just found this tool that can apparently unlock (factory unlock) network limitations regarding the UIS7862 headunits. UniSOC UIS7862 (Car HeadUnits SoC) series support. https://forum.gsmhosting.com/vbb/f2...oc-v2-10-new-year-means-new-features-2936585/

Three download links with a description of the file needed to perform an unlock for networks as far I can work out.
[FYT Android Head Units] Petarkco:
Does this unlock extra bands or something?
[FYT Android Head Units] jawbraeka2:
Not entirely sure.. I think so.. however it mentions unlocking the soc.. there is allthe information on the website.

If you step back in that forum, there is an extensive range of tools for different SOC and mobile phones. Perhaps there are more tools to help us also.

Quick search on soc UIS7862

GSM-Forum

Welcome to gsm-forum, here you find all infos about android, windows mobiles, iphones, flashing, repair, unlocking, root, development software, firmwares.

forum.gsmhosting.com

I think I hit a goldmine here.. from my understanding, it can read through the entire device and you can tweak pretty much any aspect of device.
[FYT Android Head Units] voxmagna:
Thanks I'll try.

If I can get anything into this box I'll whoop with Joy and feedback! As far as meeting locked read only system files is concerned, I'm getting more convinced I can only get around this with a de-googled reflash build that allows system file write permission - am I right or wrong?

I have the OE reflash files to fall back on, but what concerns me is hardware compatibility with other roms I might try? My box has 3 USB ports and a 4G modem - 3 USB ports seems unusual for these boxes? Their 16Mb Launcher is pretty customised, linked to the hardware, their navi app and includes settings for all round cameras I don't need. I trawled through the OE reflash files and found some references to the 4G modem and IMIE numbers. I bricked a phone once and wiped the IMEI data, so I'm more cautious now.
[FYT Android Head Units] voxmagna:
I'm only a beginner but I was also curious about mobile data bands because there are so many 4/5G mobile USB sticks on Ebay that are not compatible with local bands. (A band compatible USB stick with a wifi link is an alternative way to get your car box linked to mobile data).

When I tried a local mobile SIM in my box I got nothing and thought it was a SIM region compatibility issue? I poked around some of the file files in the OE system repair reflash and came across a text file listings bands from 1 to (about 35?). Now that doesn't mean the modem will actually do them, but it's a bit of re-assurance. I persisted and found the problem: It appears my box doesn't detect whan a mobile phone SIM is inserted in its tray. By default, my box (and others) are usually set to boot from Android Sleep mode. I changed this option (or you can use the pin in reset method) and rebooted AFTER fitting the phone SIM. It was then recognised and I got a mobile data connection. Warning: Unless you have had a previous wifi connection, automatic updates can be triggered if set and suck out a lot of your mobile data allowance - particularly navi map updates. That's why I like rooting and installing AFwall to block all traffic allowing some exceptions like email and browser.

This may be basic stuff to many, but I hope it helps somebody.
[FYT Android Head Units] surfer63:
As far as I know our units are not locked. What would you like to unlock? Please explain.
[FYT Android Head Units] maciej03:
Could someone be able to help me unbrick my unit? It hangs on the "Google" logo, sometimes goes into recovery mode with the error "no command". The Chinese "friend" is not very helpful, I can't even get the original rom from him. I tried the backup from post # 4, got all the files but there were errors in the log, anyway I tried Restore option II using universal kernel / core and my backup. Unfortunately, I still have the error.

My unit is on MCU HIY. Can I use a different AllAppUpdate.bin and only change to ro.build.fytmanufacturer = 51 ?
[FYT Android Head Units] voxmagna:
I replaced Isec6315 on the flash stick with this one. Entered factory reset and instead of the starting script I saw and photo'd before, I got the dead Android for a few seconds then a normal reboot with no scripts seen or anything copied to the flash drive. This is still one bad boy box to do anything with!

I think I'm not being helpful with information on my box to get a backup to work? I've posted the hardware info and hope it might click with members who can say 'I've got this (Merkede? (my prop=1)) box or another similar' or suggest what posts in these threads I should look at to help me get a backup working, before I try anything more challenging. Thanks for your patience.
[FYT Android Head Units] jawbraeka2:
I believe this utility has the ability to flash headunits as well as unlock network bands.. though I don't have a spare unit to try as I have ordered a k7. There is a lot of information regarding what it does for the the uis7862 if someone wanted to have a look further.
[FYT Android Head Units] voxmagna:
Every time I try to delete a file in my Android system area using utilities I'm getting the message 'Read only'. I can Magisk to get root, but if that's what 'unlocking' means, root in my case only allows read access to system files when apks installed by the vendor are still read only and I can't do anything with them.

I found a comment from learned members here that if the Android10 build kernel had file write protection set when built, system files couldn't be modified later except by a reflash. I've not got a solution yet to access write protected files in my box and I haven't succeeded in getting the backup utility to run, but I'm trying!
[FYT Android Head Units] voxmagna:
Tell your Chinese 'friend' seller you want the latest update after finding some apps corrupted the box. You may get lucky - The 'update' will probably be their OE flash files for a factory re-install of about 1.6Gb. I've had the dead Android screen come up several times, but my box seems to persistently run its internal factory reset and the system comes back. Have you written over everything or can you still find a 'factory reset' option in their Launcher, or is that gone. Good luck.

I'm coming around to thinking some of these new Android10 HUs are so locked down you have to start with a custom ROM rebuild on Android SDK to remove system file locking. Whereas others more experienced than me doing modding may have been lucky on their boxes to not get file or partition access problems? IMHO don't attempt modding based on what others are saying unless you have a 'Get out of Jail Card' like the OE ROM to put back. I have that now, but I'm still struggling to make a system backup. These guys here know there stuff. I was familiar with Android4 and some may even remember 'Android kitchen' which was a custom DIY ROM builder script using the SDK to create a personalised (and de-Googled) ROM. But times have moved and Google security changes have made modding more difficult.
[FYT Android Head Units] voxmagna:
Progress on getting Appbackup (Surfer66) post #4 to work with modified file from Boss126 post#126.:

Fundamental mistake: If you are a Windoze user, Windoze formats large flash sticks in NTFS format. When the Appbackup script files run you get the 'Dead Android - no cammand' and zilch saved to flash.

OK, so reformatted as FAT32 and restarted. This time the script ran further with some very strong red warnings. When finished I got a BACKUP folder 423Mb with files as described. I haven't tried a restore yet. But what does the red text mean and should I worry about it, even though I get the last confirmation green text line?
[FYT Android Head Units] surfer63:
This is because the Android system IS read-only. root will not help here.

Read post #2 Section IV
[FYT Android Head Units] Akerboom:
wanted to share the latest carlink 2.22 apk, dated 16 september 2022
[FYT Android Head Units] Petarkco:
One tip I've found is to disable the "surround" effect in the EQ app. It will sound a bit odd initially, but it sounds a lot better.
[FYT Android Head Units] diorlee90:
Hey guy? I has a mini bug with my UIS7862 android head unit (HU) so i want to ask somebody know about it.

My HU has 2 USB port (car port and HU's back port) and i'm using 2 phone models Mi9Tpro (miui 11 android 10) + Mi 11 pro android 11.

When i use official rom with HU (ver 2021), Both phones can connect to two USB ports by cable (showing a USB connection prompt) and both share the internet connection via usb normally.

However, after I upgraded to rom version 18/07/2022, only Mi9Tpro phone can connect to usb and share internet connection via usb with 2 usb ports mentioned above.

My mi11pro now only can connect usb and share internet connection via usb (by cable) via the back port of HU.

i dont know why, both port can connect to usb normally, only MI11pro meet problem.

Using HU's back port is not convenient and the car port is not suitable for plugging in the usb for a long time because it's memory of the 360 camera.
[FYT Android Head Units] voxmagna:
Thanks, It's your first post contribution to this thread that has helped me understand. Although many seem to think that modding is possible and easily doable when I'm concluding it isn't.

Any comment on the red text from the backup script? Each time I experiment and have to restore my HU from the OE files, I lose quite a lot of setup data for Apps which is a pain to keep putting back manually. My OE restore image on flash is about 1.6Gb and has all their Apps they put in the OEM folder which I can't get at. It frustrates me watching the script list each time as each app is restored. The universal backup script only creates about 420mb of files. What is the backup script actually restoring? I had assumed it can't restore everything on a totally erased system like the OE firmware 'Upgrade'

Thanks for your reply.
[FYT Android Head Units] surfer63:
I wrote that somewhere else as well, but will add it to the post with the scripts. The point is that part of the FYT firmwares come with a file "Ver" packed inside the AllAppUpdate.bin in the firmware, and upon flashing it is flashed to "/oem".

It only contains a timestamp like "2022-05-17 09:53:59" when the AllAppUpdate.bin was created.

Unfortunately not all firmwares do contain that Ver file. I do try to backup it anyway.

The 7zip command does generate an error, but it doesn't mean that the backup went wrong. It simply means that 7zip could not add that specific file.

I can hide error messages, but when you really get a critical error it will not be shown either, so I prefer to show what happens.

I will take another look at the script. I can 7zip "everything" with error messages enabled, and then do a 2nd step only trying to add the Ver file to the zip file hiding error messages. That makes it look less "scary".

And I will update the lsec binary to a "post-June" version.
[FYT Android Head Units] Pedroc1999:
Is there a way to modify the colour of the Navbar? I don't want to disable it, just change it to something darker and less offensive.

Thanks!
[FYT Android Head Units] voxmagna:
Thanks, I post on other forums and appreciate it gets hard remembering past posts. It would be helpful if you could include a ported copy of the text output with any errors to BACKUP when the script runs, to save taking photos.

I opened up the OE firmware AllUpdate.bin with 7zip after guessing a PW. The ver. file is empty, but the app and vital-app folders have some of the Apps I don't want and all files start 190000000_com. including their launcher. Is there any way their apps list can be edited and saved to stop installs, without breaking the update flash? Some apps are those I see scripted and running through when using it? Thanks again - Very helpful.
[FYT Android Head Units] Rogerio Prazeres:
Maybe it depends on the budget too.

If you have a dedicated 4g Internet chip and all the full functions of a top end unit, I really do not see a good use for the AA or Carplay. But if not, I can see some good advantages.

Budget: if you do not want to change the unit of the car as often as we have to chance phones to keep them updated, AA and Carplay can save you some money.

Safety: using AA or Carplay you just plug the cable and you are read to drive. The phone will enter in non-disturbe mode, will start your music app, integrated maps etc. It can also be set to accept only calls from the whitelist and more. Those apps are very well design to minimize distraction while driving, and as soon as you unplug it, everything backs to normal.

Time to start: in my case I share the mobile data from my phone, so even using "Auto WiFi tethering" app on my phone (It is a very good app tho) it still takes some time to connect and some extra clicks to be ready to use. Sometimes I'm in a hurry and it makes difference.

Personal data security: car units are not supposed to have lock screens like the phone have, so I do not use my personal google account on them. As the result, it does not have all the integration you can expect from a regular Android unit. All the google maps places history, song list etc are different from my phone. Using the Android Auto makes life a little easy.

Battery: it keeps the phone battery charged. =)

Mobile data use: it will not upgrade all the software using the my mobile data. Also my mobile plan do not charge for using some apps in the phone, but charges if you are tethering the data from the phone to another unit.
[FYT Android Head Units] GFinger240:
@surfer63 I can't thank you enough for the write up! I have a Navifly unit and I upgraded following your instructions, and it couldn't have been easier!

I've tried searching for the answer to this, but I just can't find an answer. I use Wireless Android Auto almost exclusively now, and it works great, with one exception, guidance volume. Is there a way to adjust the guidance volume separately like with a "traditional" head unit with Android Auto? Google Maps within Android Auto doesn't have a way to do it of course. Is this the one feature we need that we can't get with these headunits?
[FYT Android Head Units] boatbluejay:
Hi I ran the Backup script to make a copy of my new uis7862 head unit and it came up with ( Pls use lsecxxxupdate file after 2022-07-021) what to do?
[FYT Android Head Units] DexterMorganNL:
Can't agree more to this: I have lately using my unit like this. I start the route on my phone, step in the car and drive off. Because you can setup Carlink to autostart, you don't even need to start it manually.

So now I have a automated Android Auto setup, which has been doing very well. I'm just curious if Xiaomi fixed the bug, that they temporary disconnect the WiFi connection or Bluetooth? While crossing the border and changing the mobile network.

But I update the installed apps on the headunit occasionally anyway: but there is very few apps I installed.
[FYT Android Head Units] surfer63:
You need to replace the lsec binary with the latest from the latest firmware.

I will change the scripts but did not have time yet.
[FYT Android Head Units] boatbluejay:
Thanks for that I had the same problem when using the FYT_Radio_REMOVER/RESTORER too I guess I need to learn how to do it . I'm just getting in to the fyt head units and my programing skills are below average but I'm keen to learn.