Originally posted by simons-photography the UK website has all the versions 1.1 1.2 & 1.3 so is it a good idea to upgrade to 1.3 ? are there any improvements or just the added support for the lenses
The 1.10 version has most of the important upgrades, with the presence of the hidden lens correction menu; the 1.20 version had very minor changes but lost the lens menu; the 1.30 version added SDM lens support.
I've not heard of any significant differences in firmware capabilities among the localized, language-specific files.