Hi, I got my hands on a demo unit, not able to uninstall the demo app and factory reset my phone, can someone guide me how to unlock and flash another rom or just get rid of the demo unit apps and use the phone normally.. Any help will be greatly appreciated.
It’s been about a week and half and I haven’t been able to get my radio back up and working, I have an Android Unbranded head unit running 4.2.2. I tried to post a picture of my info from my settings screen but couldn’t get the url link to go thru. But it pretty much looks like this: CPU INFORMATION
CORTEX-A9 DUAL CORE
RAM INFORMATION
DDR3 1 GB
ANDROID VERISON
4.2.2
MCU VERISON:
4.3.16-7-01-650201-151022
SYSTEM VERSION:
2.9.4_20150316
I installed what I thought was the right update but I may have gotten the files mixed up and updated the wrong file via my mini SD card and now it’s stuck on the opening screen which is the Chevy logo and won’t go any further, PLEASE help me unbrick my radio so I can get my tunes back, haven’t had any music in my truck for over a week now and I’m going crazy!
Find the correct factory firmware and flash it through the factory recovery.. or try flashing one of the custom rom. 4.2.2 version.
Mtcb firmware is what you need.
Nsx93 said:
Find the correct factory firmware and flash it through the factory recovery.. or try flashing one of the custom rom. 4.2.2 version.
Mtcb firmware is what you need.
Click to expand...
Click to collapse
Ok I’ll do that but My head unit doesn’t have any physical buttons just a reset button and I’ve tried to get it into recovery mode so many times and I can’t seem to do it, I e tried every combination of buttons and nothing’s worked...any suggestions?
Nsx93 said:
Find the correct factory firmware and flash it through the factory recovery.. or try flashing one of the custom rom. 4.2.2 version.
Mtcb firmware is what you need.
Click to expand...
Click to collapse
Still can’t get my head unit to read anything, I uploaded the right firmware to my SD card and it’s still stuck on the opening screen, and still can’t get it to go into recovery mode... I feel like I’ve tired everything and NOTHINGS working, I’m about to throw in the towel....ANYONE HAVE ANY SUGGESTIONS OR SHOULD I TAKE A LOST N BUY A NEW DECK?
graverober138 said:
Still can’t get my head unit to read anything, I uploaded the right firmware to my SD card and it’s still stuck on the opening screen, and still can’t get it to go into recovery mode... I feel like I’ve tired everything and NOTHINGS working, I’m about to throw in the towel....ANYONE HAVE ANY SUGGESTIONS OR SHOULD I TAKE A LOST N BUY A NEW DECK?
Click to expand...
Click to collapse
from what I understand, you can use Phoenixcard, and flash an image to a USB or SD card. Then insert into the GPS or USB cable, power on the unit, and allow it to boot from that to correct a incorrect flash....just what I have been reading. I would start along those lines....I am in the same boat, but I don't have my original firmware to test
Att: Still nothing....someone w/ experience
My head unit is still stuck on the opening screen, I’ve downloaded so many different file and tried soooo many techniques that I’m seriously beat, I’ve never had a device that I couldn’t figure out, especially after almost a month of reading and tried different approaches. So if someone could take a look at my Info in the opening forum and give me some tips or advice I’d REALLY APPRECIATE!!!!
Still bricked and haven’t had music in car in over a month...
Ive tried everything and havent gotten anywhere so
im about to throw this radio into the trash if no one
else has any othetr suggestions ....
Bought a joying headunit off ebay about a year ago and have been pretty happy with it with the exception of no sleep mode and some minor glitches so I decided to check with joying to see if there were any updates which might fix my issues. Based on photos I sent them they sent me a new MCU file and a new OS file. I had trouble getting the MCU update to start but after popping the SD card in and out a few times it finally started and successfully installed. I ran in to the same issues with the OS file but never could get it to load so I watched their video and went through settings and manually started the OS update. During the update the installation ran in to the error installing the demo file and now all the unit will do is boot up and say "Joying" and then the screen will go black and it will repeat about once every minute. Since I didn't purchase the head unit directly from Joying they say it's not worth shipping back to them and paying for repairs. I've read up on this forum and on the web and tried to get the head unit to go in to recovery mode but have not been able to get anything to work.
Things I've tried so far:
-load OS on to SD card/usb and then reboot, tried in both usb slots and both SD card slots
-use a USB keyboard hitting CTRL+PRT SCR+ E OR I
-push the reset button 3 times
-push and hold the reset button until the lights flash pink and then push it 2 more times
Head unit stats:
Model JY-UO135N4PX5S
MCU version TP6735D 0.39 successfully upgraded to TP6735Dv0.43 using the file in this link drive.google.com/file/d/1OhElZ2d7iI5Lmh9leptIubOzhyoThfPK/view
Android version 8.1.0 prior to upgrade attempt using this file drive.google.com/file/d/1Nj6dpEFgyyXydeS91A0VbdKMPYpARw7d/view
Android security patch level October 5, 2017
Kernel version 4.4.103
Build number OPR5.170623.007 release keys-V4.5
Processor 8 core 64bit CPU [email protected]
Memory 4GB
Resolution 1024x600
From reading here and on the web I am pretty certain this is a QD head unit since it does not have a sleep mode. If anyone has any suggestions on how I might be able to repair this head unit please let me know.
Thanks!
AznDrgn2020 said:
From reading here and on the web I am pretty certain this is a QD head unit since it does not have a sleep mode. If anyone has any suggestions on how I might be able to repair this head unit please let me know.
Click to expand...
Click to collapse
Yes, that's indeed a QD unit.
In this case it is best contact Joying directly: [email protected]
surfer63 said:
Yes, that's indeed a QD unit.
In this case it is best contact Joying directly: [email protected]
Click to expand...
Click to collapse
Yeah unfortunately since I didn't buy it directly from them they have said the only thing I can do is ship it to them and pay the repair fee and pay for return shipping which is cost prohibitive. Figured I would try you guys before I throw in the towel and just junk it.
Hi guys please advice me what I should do.. my brother have Nissan maxima 2016 in the car he has android car unit, we do not know if this is the original head unit, but the system is old and very very slow, we tried to reset factory default but the system still stuck and slow, the only options for me are trying to upgrade for 3Party Android system or original rooted system, I am trying to find a system with the details I took from the system info but still can't find anything regarding that if someone can help me with that ill be very very thankful for that
https://ibb.co/vBknbWc
https://ibb.co/16427Qz
Hello,
does any one know whats the factory reset code for this unit ? or even if i can upgarde the MCU since i tried all the Codes from the web nothing worked .
regards