Guangdong Ojun Technology Co., Ltd. , https://www.ojunconnector.com
1, first with the seller to request TTL to USB drive, and install;
Right-click My Computer - Properties - Device Manager - Port - COM "X" (X is the last digit) - Properties - Port Settings - Change to "115200" - OK; 
Shafa1.apk Sofa Butler Desktop (download: http://app.shafa.com/apk/shafazhuomian.html)
Shafa2.apk sofa butler (download: http://)
PackageInstaller.apk (must be downloaded, otherwise it cannot be installed online) Download Address PackageInstaller.apk (363.95 KB)
4, open putty.exe
According to the order in the figure, the number behind the COM can be entered according to the digital input of the computer. After the setting is completed, select open, and then the set-top box is powered on to open the box. At this time, putty will start running the code (if the code is not running, it will set the TTL on the set-top box. The RX and TX of the line are swapped); 
Get permission
Mount -o remount,rw /system
Mount read-write df
Check if sda1 exists, otherwise re-plug the U disk and enter df again
Cd /mnt/sda/sda1
Enter U disk (U disk path behind the cd to enter df, the path of the last line prevail, self-modified to the corresponding, do not directly copy the post)
Cpshafa1.apk /system/app
Cp PackageInstaller.apk /system/app
Copy the sofa butler desktop software in the U disk to the system;
Mount -o remount,rw /system;chmod 0755 /system/app/shafa1.apk
Give Desktop Permissions
Mount -o remount,rw /system;chmod 0644 /system/app/PackageInstaller.apk
Give Packager Permissions
Am start com.shafa.tvlauncher
Launch sofa butler desktop
Cp shafa2.apk /data/app
Copy U disk sofa housekeeper to the box
Reboot
Reboot
7, start the sofa housekeeper's desktop, if the feedback command prompt not, indicating unsuccessful, re-enter the command, try again to start, or repeat the cp step to re-install, and then start; 
Preparation tools: U disk, TTL to USB cable (CH340G or 2303 are available), download putty (Download address: putty.zip (280.1 KB ) 3, download the software to the U disk, and then modify the file name (refer to the following modifications), then insert the U disk Kyushu PTV8508 box USB interface; 5, according to the following line sequence from left to right, 1 = GND2 = no 3 = TX4 = RX line access is completed, the power will be Kyushu PTV8508 boot, then putty start running code; 6, start the installation (one command, enter once, Chinese do not enter!) su