[downeaster59]

Originally Posted by FOV

In order to prepare the Boot.img for Port firmware with Onyx C67ML for Boyue T62(MOD) for your device, you should:
1. Download RKwinTools and unpack
2. In the folder "_In" to put the native firmware img file to your device
3. The program RKwinTools select "30-Init Tools"
4. To disassemble the native firmware on the components of the file by selecting "1-Unpack ROM" or in the folder "Unpack\Firmware\Image\" put Boot.img from your device
5. The program RKwinTools to choose "2-Unpack Boot"
6. In the folder "Unpack\Boot\ramdisk\" to find the file "init.rc"
7. In the file to find the line:

    chown root radio /proc/cmdline
 
# Define TCP buffer sizes for various networks
#   ReadMin, ReadInitial, ReadMax, WriteMin, WriteInitial, WriteMax,

8. Changed so that it became like this:

    chown root radio /proc/cmdline
 
    chmod 0777 /sys/class/backlight/rk28_bl/brightness
 
# Define TCP buffer sizes for various networks
#   ReadMin, ReadInitial, ReadMax, WriteMin, WriteInitial, WriteMax,

9. The program RKwinTools select "12-Pack Boot", "2. ANDROID type", "1. Unpack dir".
10. In the folder "Pack\Firmware\Image\" will find a modified Boot.img

Good luck

Thanks for this. I'll give this a try when I can.