managed to get uboot to work, i can now get into the command line, syslog say nothing when i try to upload a file.
tried to upload the file at 16:13… here are the last two entries

Wed Sep 21 04:12:25 2022 authpriv.notice dropbear[16665]: Password auth succeeded for 'root' from 192.168.8.123:56021
Wed Sep 21 04:16:38 2022 user.debug : [  233] gl-sdk>> Cgi Get a signal -- SIGSEGV