Pentax just released the firmware update version 1.21 for Pentax K-3 Mark III DSLR camera with some stability improvements.
Download link: Pentax K-3 Mark III Firmware Version 1.21
Changes to V1.21
- Improved stability for general performance.
*When this update is done, the contents of version 1.20 and earlier will be also updated.
Read more: Best Memory Cards for Pentax K-3 Mark III