The RK3026 has a distinct recovery mode.
Repacking firmware for the Rockchip RK3026 chipset—typically running Android 4.4.2 KitKat rockchip rk3026 442 firmware repack
if you need to change kernel parameters or the early boot animation. : Reassemble the modified files back into a single update.img file using the repacking function of the Rockchip tools. Put the device into Loader Mode (usually by holding Volume Down while connecting USB). RK Batch Tool to "Upgrade" the firmware. Critical Precautions Board ID Identification The RK3026 has a distinct recovery mode
First check format: