While the firmware update which improves the battery life among other things has been released to most markets now, X10 users in the UK who have an O2 branded handset are still awaiting the update. The firmware is available in several variants through out the world, starting from R2BA020 going up to R2BA024. The last digit is dependent on region and carrier. In the UK generic handsets have R2BA020 as does the T-Mobile update, while Vodafone branded handsets are given R2BA024. In India users are being updated to R2BA023. At least two networks are still awaiting the update, Three UK and O2 UK. One member of the Android Forums went as far as emailing Sony Ericsson, to ask where the update was for O2 X10 users. In the response, the Sony Ericsson rep suggested other ways to improve the battery life but, spoke specifically of the situation with O2. At the moment, Sony Ericsson are still waiting for O2 to approve the firmware version for release through the Sony Ericsson Update Service. Unfortunately no time scale is known but, the rep went on to say, as soon as the approval has been received from O2, they will release the update.

Have you updated your firmware yet, or are you still waiting for your carrier to approve the update? Let us know in the comments.