Dear all, I've this tablet: Processor: DualCore-A23 Model: Allwinner-Tablet Android Version: 4.2.2 Firmware version: A750-v2.0-Final-20140826-v03 Kernel: 3.4.39 I think it is a custom firmware/kernel since the tablet is specific for kids, and starts with an application for kids, but entering in the configuration menu (only for "parents"), android starts. I'd like to remove all custom software and update firmware/kernel. Is it possible? Should I update firmware, kernel or both? P.s. I'm very newbe about android tablets.