Linked by Thom Holwerda on Wed 15th Feb 2012 23:36 UTC
Google Forget patent trolling - Android's biggest weakness, and most daunting obstacle to overcome, is its complete and utter lack of updates. Motorola has detailed its upgrade plans for Ice Cream Sandwich - and it ain't good. If the company Google just bought can't even update its phones properly, what can we expect from the rest?
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ARM lock-in
by wigry on Thu 16th Feb 2012 07:06 UTC
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There is a perfect explanation in the "Building Windows 8 blog" about ARM platform lock-in.

The approach taken by ARM Holdings, the licensor of ARM products is, by design, not standardized in this manner—each device from each manufacturer is unique and the software that runs on that device is unique. There is of course a standard instruction set and CPU architecture, one that is always improving (for example, adding 64-bit support and multiple cores), but many of the connections between the CPU and other components are part of the innovation each licensee brings to the ARM platform. Commonality across devices can occur under the hood, but is not applicable or significant to consumers. End-users are technically restricted from installing a different OS (or OS version) on a device or extending the OS, so this is generally not possible, and rarely supported by the device maker. Device makers work with ARM partners to create a device that is strictly paired with a specific set of software (and sometimes vice versa), and consumers purchase this complete package, which is then serviced and updated through a single pipeline. The cross-partner, integrated engineering of these embedded devices is significant. In these ways, this is all quite different than the Windows on x86/64 world.

Ofcourse WP7 and iOS devices are also ARM based but probably the OS architecture is good enough that versions do not differ from each other that much and as the hardware is controlled by single/small group of companies, the devices look to the software similar enough to allow new OS versions to run on older hardware.

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