Updating blackberry bold firmware
Here, you will highlight the OS and then click uninstall.
I usually go by the date the OS was installed to know which OS I need to delete, but if you aren't sure which is which, delete all of them and reinstall your preferred OS.
Since I want to downgrade to 22.214.171.124, I would need to uninstall all the versions that came after. To do this, go to your start menu and then go to your control panel.
You may attempt to load the latest Dev Alpha B update onto your Dev Alpha A, however the Dev Alpha A is no longer officially supported as of 10.1.0.1485.
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If you encounter any issues, downgrade to 10.0.10.263 using the Autoloader method. The 10.3 SDK OS (10.3.0.442) is also being made available to those developers who would like to test on their Black Berry 10 device.
You'll need to find your device model number and then download the corresponding Autoloader above. This SDK OS update is only for testing purposes and does not replace your full Black Berry 10 OS.
CASIO, G'z One, and G-SHOCK are registered trademarks of CASIO COMPUTER CO., LTD. To maintain water resistance ensure the Charging/Data Port cover, Headset Jack, and back cover are securely closed.