The next method would be to test the "Firm Update"-Menu.
What is needed is a valid ps.fi2 file. We can then start to look at the encryption, checksums and layout.
The A720IS still uses FIR files for firmaware updates. So it is unclear how applicable any analysis of the A720 firmware is to the newer cameras.
The A720 is a DryOS cam and uses FI2-files.
Started by Scubagirl
General Discussion and Assistance
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General Help and Assistance on using CHDK stable releases
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