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fcorbelli edited this page Sep 28, 2026 · 2 revisions

Is there a newer zpaqfranz? On Win64 it can even replace itself, signature checked.

Quick summary

update (alias upgrade) checks/downloads zpaqfranz from http://www.francocorbelli.it/zpaqfranz. On Win64 it can update the program; elsewhere it only checks. Not in the builds made with -DOPEN.

Power user usage

Win64 only:

  • -force wet run (do the update; default: dry run)
  • -force -kill replace the current zpaqfranz from the Internet
  • -paranoid show the manual p7m verification steps, open the AgID website
  • -verbose dump the p7m signature details
  • two URLs on the command line: use those instead
  • The .sha256 file is always verified against a PKCS#7/CAdES digital signature (signer CF must be CRBFNC72T25H294X)

Lo spiegone

Dispatched as command U to update() (inside #ifdef ZPAQFULL). See also Windows update.

Real-world examples

Check for updates

zpaqfranz update

Win64: update (if any), always from the Internet, with the signature dump

zpaqfranz update -force
zpaqfranz update -force -kill
zpaqfranz update -verbose

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