MICROSOFT HAS UPDATED the next test build of the Windows 10 Mobile operating system (OS) so that the release works across most Lumia Phones.
The initial release of the Technical Preview was in February, and Redmond's Operating Systems Group has announced that the second build will be available soon, probably in the second week of April.
The original release was built to support a handful of Lumia devices. This was good news for those looking to get their mitts on the software early, but the list of supported devices was limited, and no flagship Lumias, such as the Lumia 1520 and Lumia 930, were included.
Microsoft execs said that the small number of initially supported devices was owing to "very tight OS partitions", which left insufficient room for the installation process to update the OS in place.
Redmond explained that the build required some partition stitching feature code, and this didn't arrive into the Technical Preview's main code branch until late last week.
"The Storage and Filesystems Team had been working on this [update] in their branch and it passed all of their quality evaluations," said Gabe Aul, head of Microsoft's Windows Insider programme.
"We spent this week testing on individual devices, as well as providing the builds with this feature to our internal rings so that we all could test it on our own phones which had previously not been usable."
Now that the team has added code in the OS test build, it means that the Windows 10 Mobile Technical Preview includes support for the following devices:
Lumia 1020, 1320, 1520, 520, 525, 526, 530, 530 Dual SIM, 535, 620, 625, 630, 630 Dual SIM, 635, 636, 638, 720, 730, 730 Dual SIM, 735, 810, 820, 822, 830, 920, 925, Lumia 928, Lumia Icon, as well as the Microsoft Lumia 430, 435, 435 Dual SIM, 435 Dual SIM DTV, 532, 532 Dual SIM, 640 Dual SIM, and the 535 Dual SIM.
Microsoft explained that this is not the final list, so we could see other devices added or removed. For example, the Lumia 930 isn't there yet.
"We still have some work to do to validate individual phones, as well as the builds that we're flighting through our internal rings," explained Aul.
"As I said in the post on frequency I cannot guarantee a date for a new build. What I can tell you is that we feel great here about the partition stitching code and current builds, but we likely still have at least one more week of engineering to ensure we get a great build for the expanded list of devices."
Downloading the Windows 10 Technical Preview requires a Lumia device running Windows Phone 8.1 with Microsoft's Preview app installed, and you'll need to be signed up to the firm's Insider Program. From here, head over to Settings > Phone Update > Check for Updates.
If you don't like Windows 10, Microsoft has said that you'll be able to revert to Windows Phone 8.1.
Microsoft officials have said that Windows 10 will launch sometime "this summer". µ
Firm's first high-end speaker gets the thumbs up from us
Yes. Yes you can
A fantastic ultraportable that's almost devoid of innovation
Screen if you want to go faster