- Enable USB connection in Settings-USB
- Enable USB Debugging in Settings-Development (you need to enable Developer options first on top)
- Switch to Mass Storage mode in Settings-Storage-(click the top right tripledot menu button)-Storage Settings.
If all this is done, both RKBatchTool and RKDevTool should be able to see the device, as "RKUSB Mass Storage Device". Then click the Switch button, it should reboot to bootloader mode and then you should be able to flash.
If these won't work, get a microSD card, at least 1GB. Plug it in the device, format it, then pull it, jam it in a card reader/phone/whatever else you can use to connect to your computer, and plug it in your PC. Download the update you want, get the .img file, rename it to update.img, put it on the SD card (no folders, nothing, just open it in File Explorer and copy it there). Then put the card back to your stick. It should detect the update, and pop a message that there's an update, press yes if you want to apply it, etcetera... Just press yes, and it will reboot to recovery, flash the image, and you are done. With a newer firmware you should be able to see your device on your PC too.
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