I will try this afternoon! Thanks!
I have z-wave devices in my inbox! Thanks!
I re-installed the 2.3 release spk to re-enable the tmpfs functionality. So it’s working with the following configuration:
- java8 build 191 arm64 hardfloat abi
- Openhab 2.3
Are you planning to include this modified nrjavaserial in the main openhab 2.4 release? There are a couple of Synology devices which use the RTD1296 CPU, which are probably having the same issue with serial communication
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That’s very good news! 
Yes I’ll do some more testing and then create a PR to get it merged upstream. ARM64 will be more common in the future and this native library dependency is one of the blocking issues for people who want to run openHAB on ARM with a 64-bit JVM.
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I’ve created the following PR to add arm64 support to nrjavaserial:
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Meanwhile my PR for adding arm64 to nrjavaserial got merged. 
There’s still no official (3.16.0) nrjavaserial release with these changes.
Shall we build our own nrjavaserial release with these changese @Kai?
That way arm64 Synology users can use it with the 2.4.0 release.
If so, what version shall we use? 3.15.0.OH.2?
Too many dots. How about 3.15.0.OH2?