[DaremoS]

Concerning the terrible message "there are too many bad blocks" at the end I was able to recover my device.
To do that I started to load firmwares trying to use those with small modules, the module of my device is about 10 mb. size, so I loaded of up to 9.5 mb size.
Almost all gave me the annoying "too many bad blocks" until I load a Zarva MF740 of about 8 mb. size with its corresponding Customer Update that run the whole process without the damn message, giving me at the end the sweet "firmware upgraded successfully".
Of course my device didn't gave me the its right screen, still showing me still a white scree, but at least was back again to allow me continue trying other firmwares.
As a lesson "there are too many bad blocks" message is not in anyway terminal, it just a module that have occupied not proper memory address. In my case was some Renyfm firmware that I try to install.
Rockchip is very consistent loading firmware, what fails is the screen, but its internal functions works as usual, but "blinded", you can even listen music if you key properly the buttons.
One last thing never forget to format the USB drive in the PC after each successful upgrading, despite if the device has white screen.