Problem updating Firmware over USB

[Chrescht]

Ia it mormal that this number changes after each power cacyle?

4680, 4674, 4677

[Chrescht]

No, it cycles....but not always

[dmitri]

Slight number variation is ok. Load this firmware:

megadrum1284_56_20110925.zip

It should detect 20MHz correctly now and MDM should work.

[Chrescht]

Thx a lot for your help Dmitri(even on sunday),
now firmware version is detected by MDM and MIDI log shows activity.

May i ask what the problem was?
if explainable

Thx

Christian

[dmitri]

May i ask what the problem was?

For some reason the internal oscillator in Atmega, against which the external crystal frequency is measured, has a wider variation in frequency than stated in the Atmega's datasheet.

[Chrescht]

And that's why MD detected it as 16MHz instead of 20MHz?

[dmitri]

Yes.

[BazzMasta]

Hi everyone, Dmitri specially!

I'm trying to update my firmware version (1284_56_20120122) over Megadrum Manager.
But, when I power Megadrum up while holding LEFT button, nothing happens.
It just goes normal, to main menu screen "Dmitri's Megadrum".
No bot-loader appears, no frecuency to choose...
Thanx for the help!

[dmitri]

Hi everyone, Dmitri specially!

I'm trying to update my firmware version (1284_56_20120122) over Megadrum Manager.
But, when I power Megadrum up while holding LEFT button, nothing happens.
It just goes normal, to main menu screen "Dmitri's Megadrum".
No bot-loader appears, no frecuency to choose...
Thanx for the help!

Does pressing LEFT button work in the MegaDrum menu?

[BazzMasta]

I have rotary encoders, wich I always navigate with.
So, I asume by pressing Left button, should also goes to the settings.
Well, it doesn't