It’s an easy task to upgrade the firmware on these units, but deciphering the Chinese instructions may put some people off the task. So, here is my version.
On the software side, you need one Windows application, RKBatch Tool, and a new firmware image file. RKBatch Tool 1.4 is available here and here. Drivers for various editions of Windows are included. (No OS X drivers. Sorry.) Yuandao keeps its firmware image files here. Don’t let the Chinese deter you. Just look for “N10” and the most recent firmware file. Be sure the file is the right one for your unit. There are several versions of the N10, each with its own firmware images. At this writing, the most recent image is N10-2.3-20111012-ZZ. You will need to unzip it for RKBatch Tool to install it.
On the hardware side, you need a Windows computer running 2000, XP or Vista. Drivers for these PCs are already on the tablet. If your computer does not pull the drivers off of the tablet, when Windows prompts you for the drivers, point the installer to the RKBatchTool drivers folder. Windows 7 and 64-bit systems may not recognize the tablet, so you can follow this link (given above) to get those drivers. You’ll also need the USB cable that came with the tablet, or one similar to it (mini-USB to standard USB).
Another preliminary step to turn on USB debugging on the tablet. Go to Settings | Applications | Development | USB Debugging. You can turn it off once the firmware is updated.Start with the tablet powered off. Plug the USB cable into your computer, but not into the tablet yet. While holding down the M button on the tablet (marked on the back side), insert the USB cable into the tablet’s USB port — not the OTG port). Wait for your PC to respond. It should recognize the tablet and prompt for a driver installation. Those drivers are on the tablet itself, but you can also use the ones included in the RKBatchTool archive.
Open RKBatch Tool. At the bottom, one of the numbered rectangles representing devices should be green. That means it sees the tablet and can upgrade the firmware. Click on the browse button at top and locate your unzipped firmware file. Then click the Upgrade button at the bottom. Wait about 5 minutes for the process to finish. If it’s successful, RKBatch will confirm the task is done and the tablet will reboot on its own. Tell Windows to unmount the USB devices, and disconnect the cable.NOTE: Be sure the tablet has a full charge on the battery, or is plugged into the AC adapter. Don’t disconnect the cable until the tablet reboots. Otherwise, you may end up with a paperweight.