I cant stop u-boot from loading Ubuntu, entering keys on the debug uart wont do anything. Thus I downloaded u-boot sources, compiled and configured it.
I used the following commands:
git clone git://git.denx.de/u-boot.git
cd u-boot
make rk3288_config
CROSS_COMPILE=/opt/toolchain/bin/arm-none-eabi- make
I couldnt update the loader (u-boot) because the instructions are wrong (the only tool working seems to be Linux_Upgrade_Tool_v1.21), and it wouldnt enter command prompt unless I would set the bootmode to Android.
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