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NHS31XX NFC programming

Question asked by Martin Beisteiner on Feb 4, 2020
Latest reply on Feb 17, 2020 by Mario Ignacio Castaneda Lopez

Hi!

I'm trying to flash an NHS3100 via NFC. When I use the "NHS31xx Downloader" app it works fine.

 

Now I would like to do the same with an NFC reader. For this purpose I have adapted the python script, otherwise it won't work with the current python version. The script is already running now, I can connect to the NHS and download the file. But I have the problem that there is something wrong with the CRC, the bootloader always returns an error code here.

 

I would need the data of the CRC algorithm which should be used, and if possible a bin-file with the CRC for checking my calculation. The file does not need to be a running firmware for the NHS, any file with dummy data would be sufficient.

Many thanks!

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