@ManoftheSea Yes, as mentioned in my previous post, I came to the same conclusion. It seems that v5 cannot do it, but v7 can. I have already bought the v7 and now I am trying to get it to download the bootloader from from SD card. So far no luck.
Also you are correct, my links are not applicable to the problem. However, I have no better links. I am unable to find any link with a description of how to download the bootoader from SD card, be it with espressobin v5 or with v7.
The depictions and tables from the link you posted (http://wiki.espressobin.net/tiki-index.php?page=Ports+and+Interfaces#Boot_selection) also seems to be weird. If you look at the table for v7, all the boot modes (other than NOR) seem to have the same jumper setting. This cannot be correct. Also the order of jumpers for v7 is wrong in the table. The order on the real board is J3, J11, J10, which is quite irritating when using the table to check your settings. This goes further, the depictions and tables for the v5 are flat out wrong. The table says that "NOR boot" is J11=1, J3=0, J10=0, but to get it to boot from NOR flash I actually have to sett it to J11=0, J3=0, J10=1. This sucks and took some time to figure out.
Long story short: I cannot find any source with a description of how to download the bootloader from SD card with espressobin v7. Maybe I should open a new thread for that.