I rang sony and they told me I could update from any version to 1.30. I had 1.13 which I couldn’t update directly to 1.26. I have updated mine and a friends camera with no issues whatsoever. I believe this applies to version 1.30.
Hi,
I believe the most recent EX1 Firmware update is 1.30. You can update to 1.30 from any version. I updated successfully a few months ago from 1.13 to 1.30 with no trouble at all.