I'm not aware of a method to set an arbitrary hex value for a field or record separator (though I could swear that strings were acceptable as separators in some ancient version of the CLI -- maybe I just dream in sqlite.)
I don't know if
.mode ascii
would be of any use to you.
It's described as: "Columns/rows delimited by 0x1F and 0x1E"
A hack might be to use the CLI's file functions to read the import file into a single blob field in a temporary 1-row table, perform a REPLACE or two, then write it back out as your new import file.
[](https://sqlite.org/cli.html#file_i_o_functions)
Someone here may have a better answer.