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New bench scope - Fnirsi 1014D, 7", 1GSa/s

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joseph4511:
okay i can see the usb as tablet let me flash the sunxi-fel

Edit: It says ./sunxi-fel command not found. I renamed the files.

joseph4511:
okay i uploaded something but screen is still flashing

pcprogrammer:
Well at least the sunxi-fel seems to be working. See that you found the version command and that it responded the same as mine.

Since it does not act the same as here it is safe to say something else is broken that stops the scope from continuing.

Lets see if this program works when loaded with sunxi-fel.

command: sudo ./sunxi-fel -p write 0x7FFFFFE0 fnirsi_1014d_firmware_backup.bin exe 0x80000000

Edit: when it works and it is done the SD card needs to be reloaded with the FEL start program.

morgan_flint:

--- Quote from: pcprogrammer on May 05, 2022, 03:24:13 pm ---
Since there is no idea on which chip they used for this special ic it will not be easy to get to the bottom of it. It is also not needed because I know what the main cpu needs from it...

--- End quote ---

Hello! I've been reading through this thread and came over the "mystery chip" issue, and it remembered me of a similar problem with Jyetech's scopes (DSO150 and DSO138 mini specifically).

Could that chip be an ATSHA204A or something similar?

That is like an I2C EEPROM (in fact, includes 4.5 Kb) but with some crypto authentication features. Jyetech uses it to avoid their firmware running on counterfeit copies of their products, by reading the unique serial number on the chip and checking it against an activation code specific for each serial number. Some more info here and previous posts.

Maybe FNIRSI is using a similar approach, or just including the chip in case they detect counterfeits in the future (the initial versions of DSO150 ran on counterfeits also until Jyetech started to include the activation code)

joseph4511:
i goes black screen when i load the program

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