Firmware V1.18 C

[ural]

With soft reset you still got to hold the buttons.
Check your SD card content. Are you sure it is nerdseq.hex in the firmware folder and not for example nerdseq.hex.txt if you saved the file falsely.

1.18B or any other running firmwares can't be the issue.
Maybe you want to add a screenshot of your firmware folder here (you can attach JPG photos), so i can check if all is right in there.

Finally I did it.
The problem was in hidden additives of Safari. - Even when I deleted .txt extension the file is still remained somehow "marked" as text file - at least "kind" of file still was "plain text"...
Then I downloaded firmware with Firefox. And with Firefox there wasn't any added file extensions - just nerdseq.hex. And that was it. Nerdseq recognised this file and smoothly update was done.

Oh fine! ( I knew   ).  Mac and Windows and the browsers are too smart compared to 'oldschool' trackers these days :-)

For me it took a 23 years of journey from C64 sequencer called "Supertrack" to Nerdseq - to discover the joy of sequencing again... So many delusions in between, so little really nice and musical tools. Thank you! All I still need - simple and fast way how to apply Half Tempo/Double Tempo to a track.

*SPOILER ALERT*  Nothing more to say...

https://forum.xor.eu/attachment.php?aid=66