add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

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# locally computed
sha256  2cfeb6a9236e1a743c8010f05e504dbc92169ef42d9a6cf7948954a577bfc386  DataflashBoot-1.05.tar.bz2