Thank's I will try it!!
---------- Post added at 04:18 PM ---------- Previous post was at 04:13 PM ----------
Sory my a neophyte can you tell me step by step how to do that!!!
That my first radio headunit i buy for my Hyundai Elantra GL 2013!
First :
Make a Full Backup/Memory Dump:
Install latest MTK Drivers in your computer.
Open SPFlashtool, Select Memory Test Tab, Select only RAM Test (uncheck the rest), push start, and connect the unit disconnected from car. Save the information appeared, in a text file for later. (Read above "Memory dump procedure" for the usb connection setup).
Now go to ReadBack Tab, Double click on empty space next to tick mark, Select a folder where you want to store the dump file, and Type a name for the dump file you are going to creat, (ie. Boot_1, Boot_2, USER). Click Save. In next window "Readback block start address", select the region you want to make backup of (ie. EMMC_BOOT_1, EMMC_BOOT_2, EMMC_USER).
Start address is 0x0000000000000000
Length copy and paste from the text file you created earlier.
typically for Boot_1 and 2 the length is 0x0000000000400000
and for USER (16GB models) the length is 0x00000003a8000000
Click OK.
Now click on Readback and then connect the unit via usb cable. and Read process will start.
Do the same to make backup of all three partions. USER will take long time because its the largest partition.
Then :
Uploading Firmware (full or parts) via spflashtool:
If you are uploading the firmware available in parts, you only need to upload "BOOTIMG" and "ANDROID" (SYSTEM).
You may also need to flash "RECOVERY". Remember to uncheck the preloader!
Source:
https://xdaforums.com/android-auto/...-firmware-chinese-7-head-unit-ac8227-t3931863