A 12-voice drum synthesizer.
Elektron's LFO timings are at once opaque and yet strangely intuitive. LFO rates are specified in terms of two parameters: a speed and a multiplier. These quantities are related by the following formula1): $$\frac{128}{T_{steps}/16}=speed\cdot mult$$
For example, to create an LFO with a period of 8 steps, set $T_{steps}=8$ to yield $speed\cdot mult=256$. We arbitrarily choose $mult=16$, so $speed=16$. This works just as well for odd periods; taking $T_{steps}=5$, we have $speed\cdot mult=409.6$. With $mult=8$, $speed=51.2$. Negative speed values seem to simply invert the waveform.
Load the SysEx file into Elektron Transfer, and connect the Syntakt to the computer via USB. On the Syntakt, navigate to Settings → System → OS Update. Press Send in Elektron Transfer. Once the update is complete, the Syntakt will ask to be rebooted.
Mine currently has version 1.21 installed.