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Firmware update for ATTEN ADS1102CAL+ oscilloscope

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darist:
In my latest communication with ATTEN they told me that the ADS1102CAL+ oscilloscope type is no longer supported, so they have no firmware update later than 1.90.0(140724.0). However, HANTEK does have a new firmware (dso5kp_func_dso5102p20170318.up) for the DSO5102P model, which as I understand shares the same h/w with my ADS1102CAL+.

In the past I tried to update using the HANTEK firmware without success. The sizes of ATTEN and HANTEK firmware files are quite different (~2K and ~1.5K  respectively). Maybe I need to encrypt the HANTEK firmware using PGP before using it on ATTEN, as tv84 suggests? Can anybody please provide some info how to do this?

The final question is: can I use the HANTEK DSO5102P firmware in my ATTEN ADS1102CAL+ oscilloscope?

tv84:
Maybe you can decrypt/decompress the Hantek fw and see if you recognize anything inside.

Use in linux:

gpg  --passphrase dso5000p dso5kp_func_dso5102p20170318.up > dso5kp_func_dso5102p20170318.tar.gz

darist:
Thank you for the answer.

I decrypted the file as you suggested (attached) but I'm not quite sure what to look for. I also don't know how to re-encrypt the package in a format that my oscilloscope can load. I'm willing to give it a try but I need some instructions (or links) how to do it. Maybe other people can also benefit from this, as HANTEK frequently updates the firmware/drivers/software for their models, whereas ATTEN has completely abandoned them.

P.S. In case of firmware update failure, is there a (relatively) easy way of restoring the original firmware?

tv84:
Darist,

I would guess that you need to know the atten pgp password, that they use in the fw you flashed.

I've been unable to find it in the web so the best option would be for you to retrieve it from your scope. I think that the decrypting script could still be present and you could read the password directly from the script. Look at hantek example.

Are you able to get to the linux prompt of your scope?

Without decrypting the fw that you currently have flashed, I would not try to flash anything else because of the risk involved.

If you can get me dumps of your scope, then I can help.

darist:
No, I haven't tried to get a linux prompt yet, as in my understanding this requires to open up the scope and connect some pin headers (GND, TXD, RXD) to the PC USB port via a  CP2102 USB-to-serial TTL adapter. Is there any other way by just using the USB port of the oscilloscope?

You are right, I will not try to flash anything just yet. I will try to get a full backup of my scope using the guide below:
https://marcowuen.wordpress.com/2013/09/01/dso-hacking-quick-guide-voltcraft-dso3062c-hantek-dso5062b-tekway-dst1062b/
I haven't been able to find any guide specialized for atten, so this will be my best shot. However, I suspect that the "dst1kb_b_backup_tool.up" script has been compressed using the HANKEK passphrase, so in this case I'm back to zero. The other idea I have is to try to brute-force the pgp passphrase from my latest firmware. Do I really need a linux prompt in case of firmware update failure? If so, I will try to do it.

I will let you know of the results when I have something.

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