Did you back up your existing maps to a folder before you started? If so then reformat the sd card to FAT 32 which will erase the files on it and it should give you a clean space, sufficient to install the current map. I used bundle 1 maps as it is probably the smallest. Have you tried to identify what the error code means? I have got error messages on DiscoverCare before but it told me it was lack of space and when I reformatted the card it solved the space problem.