DFU v7.x update bootloader - CRC error

[Oleh]

I'm using

• s110_7.1
• sdk 7.2
• DFU

updating application (application.hex + application.dat zipped) works fine, but when updating bootloader (bootloader.hex+bootloader.dat zipped) it always report an crc error at the end of upload.

am I missing something?

Thanks&Cheers

[Stefan Birnir Sverrisson]

Hi

Try to follow the guide given in the update from 2.1.2015 on this thread.

[Oleh]

Hi Stefan, yes I'm aware of this thread, in my case the 'application.dat' worked, but the 'bootloader.dat' didnt. the CRC done in the same way as for the app: hex2bin then crc - invert for endianless ;) THis works with application firmware update but not for the bootloader itself. I'm using iOS devices to test.

[Stefan Birnir Sverrisson]

Hi OlehSky

I have verified that the bootloader update works with nRF Toolbox v1.5 for IOS. I have followed the guidance given in the document "How to generate the INIT file for the DFU" that I have linked to earlier to create the CRC for the .dat file. I have created two files, bootloader.bin and bootloader.dat and put them both into a zip file. Then with nRF Toolbox I have uploaded the zip file to the device. Let me know of any complications.

[Oleh]

Thank you Stefan, I will try and post back ;)