OK, I got the DSONEi firmwre using the modified ntrboot flasher.
The dumped file size is 4 MB, not sure is a good dump.
I don't have any programmer, so I can't to restore the dsonei firmware.
dsonei official firmwre
bin format: down.supercard.sc/download/evolution/dsonei_update_ndsi145.zip
nds format: down.supercard.sc/download/evolution/dsonei_update_chs_ndsi145.zip
down.supercard.sc/download/evolution/dsonei_update_eng_ndsi145.zip