Serial port also disabled, unable to key in any command.

use boot cmdline,disable serial, cmdline:[mem=1G console=NULL,115200 blkdevparts=mmcblk0:]

Not me lah, I'm also looking the way to install the apk.
The TTL way is found from the China website, tried but no luck.
Hope you can found the solution and share here.

Currently the version blocked adb, recovery and serial port, so I think just can flash the partition of fastboot to unlock the serial or flash recovery partition to update the recovery version, but where can find the fastboot or recovery image?

I use the Putty.

Here is the partition of the box,

0 fastboot 0x00000000 0x00200000
1 partition 0x00200000 0x00200000
2 recovery 0x00400000 0x01000000
3 deviceinfo 0x01400000 0x00200000
4 baseparam 0x01600000 0x00800000
5 pqparam 0x01E00000 0x00800000
6 logo 0x02600000 0x00800000
7 fastplay 0x02E00000 0x02800000
8 boot 0x05600000 0x01000000
9 misc 0x06600000 0x00200000
10 system 0x06800000 0x27000000
11 cache 0x2D800000 0x19000000
12 backup 0x46800000 0x19000000
13 swdb 0x5F800000 0x03000000
14 userdata 0x62800000 0x80000000


If no one can provide the recovery image, I think can backup the boot image then modify it to enable the serial, or modify the system image and insert the apk into /system/app, then flash back into the box.
I just worry my box become broken

You can try to backup your box's image by Hitool, if can make it, then can modify the boot image to enable the serial.

I tried to backup but failed, i suspected the fastboot also locked, currently only the way is get the image from the box which is not yet upgrade, and flash the fastboot and recovery partition, no need to find from the China's website already, they didn't have our box's image, only the image matched with the box just can success write into the box.