Products > Test Equipment
Siglent .ads firmware file format
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tv84:
Yes, the first one is not 0x1400. And remember you have the incrementing pattern also.
janekivi:
Thanks for that!
So far I found more of them after the one I show there with red...
janekivi:
Previous format was toooo simple and this equipment has bit more powerful
cpu to read complicated update files. So they totally shred the file at this time.
So far I found five ascending FF patterns. One starts from beginning but doesn't
affect those first two shorter parts. XOR FF is switched on at 0x1400 parts.
First was the every second 0x1400 is fully XOR-ed with FF (first pair was shorter)
and other from the pairs has rising XOR FF pattern from beginning.
Then I jumped bit forward and found XOR FF pattern which is starting at some
point and starts his steps from 100 bytes and counting up by 1. I don't know other
parameters jet. And one XOR FF is stepping forward by 4 bytes, like 262-266-270-...
I see there at least one crypted part.
So, there are (too)many XOR FF patterns and crypted regions.

I was talking about this zip file what you get after opening ads with usual way-
decrypt, reverse, XOR FF. All this process is done after that with output ZIP file.
So there is not possible simply extract something. Just scrolling down with Notepad
after some of pattern elimination I found this intact PNG image.
janekivi:
Afterwards we know...
Packed data part of that png file is unpacking with 7zip without errors.
I need to use .ZIP to upload it here.
We need to get data straight and app out.
tinhead:
did someone of you guys got already app and bitstream from SDS2000X-E? I wish i could get it as well ...
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