root tutorial using onda v820w ch v1 for example :
--root tools (root.zip)
http://ift.tt/1Qj9Iq4
or
link：http://ift.tt/2cMalLn
pwd：h79i
--use cmd and BOOTIMG.EXE to unpack boot.img
bootimg.exe --unpack-bootimg
-- use notepad++ open file \initrd\init*.rc , maybe called initasp.rc
--search string "class_start core" , add one line on this line's top
start sysinit
-- and then add these lines to bottom and save
service sysinit /system/bin/logwrapper /system/xbin/busybox run-parts /system/etc/init.d
disabled
oneshot
-- find another file called default.prop
modify ro.secure=1 to ro.secure=0
--use cmd and bootimg.exe to repack boot.img
bootimg.exe --repack-bootimg
rename boot-new.img to boot.img
after successfully boot into android , go to developer enable OEM Bootloader Lock and usb debug mode
download lastest supersu TWRP / FlashFire installable ZIP , copy to emmc flash or microsd card
http://ift.tt/2cMapur
unzip root.zip to c:\
-- install driver follow this order and new driver overwrite old driver
iSocUSB-Driver-Setup-1.2.0.exe
IntelAndroidDrvSetup1.5.0.exe
PhoneFlashTool_5.3.2.0_win32.exe
connect otg usb line and hold "volume-" restart tablet or you can find reboot app to enter fastboot mode
cmd run
fastboot flash boot boot.img
fastboot oem unlock
fastboot reboot
hold "volume-" and enter fastboot mode again
-- if twrp file is not working on your tablet , you can find others twrp version , you need try more by yourself
v820w ch twrp file : I use v919 ch twrp on xda forum , rename to twrp.img
--cmd run to enter twrp recovery mode , if tablet don't automatically to restart to enter recovery , you can use volume key to select recovery mode and power key to ensure
fastboot boot twrp.img
connect mouse because touch fuction maybe not work , twrp install supersu recovery zip , root finish
you can use app like foldermount now
if play store has new version supersu , you can update app
but you can't install "binary" from app , it will damage system , if you do , you will find microsd size always 1GB max
so , how to install supersu "binary" , you only need use above step about flash twrp and install lastest recovery zip , after install lastest supersu zip file , on table you run supersu , it will not show any update "binary" request
--root tools (root.zip)
http://ift.tt/1Qj9Iq4
or
link：http://ift.tt/2cMalLn
pwd：h79i
--use cmd and BOOTIMG.EXE to unpack boot.img
bootimg.exe --unpack-bootimg
-- use notepad++ open file \initrd\init*.rc , maybe called initasp.rc
--search string "class_start core" , add one line on this line's top
start sysinit
-- and then add these lines to bottom and save
service sysinit /system/bin/logwrapper /system/xbin/busybox run-parts /system/etc/init.d
disabled
oneshot
-- find another file called default.prop
modify ro.secure=1 to ro.secure=0
--use cmd and bootimg.exe to repack boot.img
bootimg.exe --repack-bootimg
rename boot-new.img to boot.img
after successfully boot into android , go to developer enable OEM Bootloader Lock and usb debug mode
download lastest supersu TWRP / FlashFire installable ZIP , copy to emmc flash or microsd card
http://ift.tt/2cMapur
unzip root.zip to c:\
-- install driver follow this order and new driver overwrite old driver
iSocUSB-Driver-Setup-1.2.0.exe
IntelAndroidDrvSetup1.5.0.exe
PhoneFlashTool_5.3.2.0_win32.exe
connect otg usb line and hold "volume-" restart tablet or you can find reboot app to enter fastboot mode
cmd run
fastboot flash boot boot.img
fastboot oem unlock
fastboot reboot
hold "volume-" and enter fastboot mode again
-- if twrp file is not working on your tablet , you can find others twrp version , you need try more by yourself
v820w ch twrp file : I use v919 ch twrp on xda forum , rename to twrp.img
--cmd run to enter twrp recovery mode , if tablet don't automatically to restart to enter recovery , you can use volume key to select recovery mode and power key to ensure
fastboot boot twrp.img
connect mouse because touch fuction maybe not work , twrp install supersu recovery zip , root finish
you can use app like foldermount now
if play store has new version supersu , you can update app
but you can't install "binary" from app , it will damage system , if you do , you will find microsd size always 1GB max
so , how to install supersu "binary" , you only need use above step about flash twrp and install lastest recovery zip , after install lastest supersu zip file , on table you run supersu , it will not show any update "binary" request
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