Today I decided to "gut" my Nextbook 7 #FY1211 for the purpose of finding which system apps were bare minimum for this tablet to operate, and allow me to install apps I use. In the process, on re-boot, my tablet became stuck on the bootanimation screen and began blinking every 5 seconds or so.
My 1st response was to just reflash Bob's 1.4 ROM. Instead, I decided to 1st restore my tablet to its original firmware, then reflash Bob's ROM. However there is no original firmware for the #FY1211 on the NextBook website. Borrowing information from d33dvb at XDA and information Finless Bob included in his download of his #FY1211 ROM download, I decided to post this very simple guide for how I unbricked my tablet. I also felt it was a good idea to have these directions all in one place at FreakTab. I hope it proves useful.
1. If you have already installed a rooted ROM on the Nextbook 7, then you should already have the Rockchip drivers installed on your computer. If you haven't, or they have somehow become corrupted, you can install/reinstall the drivers from the Rockchip Batch Tool v1.4 downloadable here:
2. You will then need to download a copy of the original firmware from the NextBook site. The site includes firmware for #FY0911 and #FY1011. Since I have a #FY1211, I downloaded the firmware for the latest #FY1011. You can download the original NextBook Firmware here: http://www.nextbookusa.com/download.php
3. Next, plug your tablet into the USB and the power supply. Then push down the hole in the back of the tablet with a pin. You should hear a chime/ding from your pc like it is trying to discover something new being plugged into the USB port. Hold the pin in until the tablet stays on a black screen.
4. To ensure you have done everything correct, open the Device Manager from the Control Panel. You should see the RK29 device listed. If it isn't listed, unplug the device and reinstall the drivers. Then plug the USB back in. The RK29 should now be recognized.
5. Now click and run RKBatchTool.exe. Towards the bottom of the screen, you will see a green box highlighting the number 1. This is to inform you that your device is ready to install the firmware.
6. At the top of the RKBatchTool you will see a long box that says FW Path. Use the browse button to find the firmware (update.img) you downloaded from Nextbook in step 2. Then at the bottom of the tool, click the upgrade button. In less than 5 minutes, your firmware will be installed on your tablet. It will then reboot, and your tablet will be in the same state as when purchased.
7. Your tablet is now fresh and ready to install a custom ROM.