have a Linsay F-7HD and it is giving me a fit trying to root it. This is a nice tablet with Google certifications and Google Play. A Cortex A-9 2.0 single core processor, 4G flash drive with 1.98G free, 512m, Android 4.1.1, micro sdcard to 64G. and usb host cable,ear phone plugs, usb cord and ac charger, very responsive,quick all for $99.00. I only want to root mainly to change vold.fstab, so as to switch internal and external. Also need to do a backup of Rom.Problem is that it connects to usb, usb debugging is checked, can transfer files to or from device. I have SDK installed on C:, it works fine with all my other android devices but can not detect F-7HD in normal on mode. Recovery by pushing +volume and then power, gives me android down but can't get into any menu BUT ADB detects device and as being in recovery mode, I've tried adb push for superuser, su, and busybox. Busybox and su are there but not superuser. I tried chmod after is says all is transferred by abd push but comes back error. I also can't get into fastboot mode. I will list the abd commands below so maybe someone can give me a pointer or ANY help. I'm not good with adb but can usually Google and find commands that I need. I have the 3 files in my SDK platform tools folder and has worked before with any other device or files. I also can't get a adb shell or su to work, adb reboot only turns device off. Any help would be great. Thanks
adb push Superuser.apk /system/app
adb push busybox /system/xbin
adb push su /system/xbin
adb shell chmod 664 /system/app/Superuser.apk
adb shell chmod 664 /system/xbin/busybox
adb shell chmod 664 /system/xbin/su
adb shell reboot
adb push Superuser.apk /system/app
adb push busybox /system/xbin
adb push su /system/xbin
adb shell chmod 664 /system/app/Superuser.apk
adb shell chmod 664 /system/xbin/busybox
adb shell chmod 664 /system/xbin/su
adb shell reboot