Here's the .22 release notes:
【Version】
V2.19.40.22_20150627
【Model Name】
ZenFone2 (ZE551ML)
【Release Date】
2015/07/02
【Release Note】
1 Add kill switch (Anti-theft) function for US and Canada regulation.
2 Improve modem capability in India
3 Fixed the issue that cannot phone with Tailand True Provider SIM1.