# openHAB Milestone builds **URL:** \ **Category:** Announcements\ **Created:** [August 29, 2018, 12:37pm UTC](https://community.openhab.org/t/openhab-milestone-builds/50359 "2018-08-29T12:37:16Z")\ **Posts on this page:** 1\ **Showing post:** 517
**Author:** ![zskadar](https://community.openhab.org/letter_avatar_proxy/v4/letter/z/a183cd/32.png) [@zskadar](https://community.openhab.org/u/zskadar)\ **Post date:** [October 22, 2019, 4:49pm UTC](https://community.openhab.org/t/openhab-milestone-builds/50359/517 "2019-10-22T16:49:59Z")
I’ve got also many java based errors in the log since I’ve changed the system to the milestone builds. I’ve used zulu8.38.0.163-ca-jdk1.8.0\_212-linux\_aarch32hf as java. Today, I upgraded java to zulu8.40.0.178-ca-jdk1.8.0\_222-linux\_aarch32hf, and everything healed. Openhab starts without any issue, there is no errors in the log, and finally the rest api also works fine without the error 500 issue with regards of swagger.json. It was faulty since the beginning. I’ve used this procedure for java upgrade: > [@HowTo: Install Zulu Embedded Java on Raspberry Pi 3](https://community.openhab.org/t/howto-install-zulu-embedded-java-on-raspberry-pi-3/22589/46): > > After getting a new brand SD card… another stab at this… I have used your instructions as follows: sudo mkdir /opt/jdk/ cd /opt/jdk sudo wget http://cdn.azul.com/zulu-embedded/bin/zulu8.31.1.122-jdk1.8.0\_181-linux\_aarch64.tar.gz sudo tar -xzvf zulu8.31.1.122-jdk1.8.0\_181-linux\_aarch64.tar.gz sudo update-alternatives --install /usr/bin/java java /opt/jdk/zulu8.31.1.122-jdk1.8.0\_181-linux\_aarch64/bin/java 181 sudo update-alternatives --install /usr/bin/javac javac /opt/jdk/zulu8.31.1.122-jdk1.8.… --- _[View the full topic](https://community.openhab.org/t/openhab-milestone-builds/50359)._