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Users relying on software carrier unlock ultrasn0w must use sn0wbreeze created custom IPSW firmware to upgrade there iDevice to an upgraded iOS version without updating the baseband which breaks the unlock. However, Apple iTunes prevents users from upgrading or restoring to these custom IPSW files and errors out the process with codes 3194 and 1600 - for which we have shared solution earlier. Here is an step-by-step guide to restore an custom IPSW file to iPhone using iTunes the correct way without any errors.

While Microsoft Windows 7 is the mainstream Windows OS in use now, people still prefer and use Windows XP. I recently came across an Windows XP specific issue, where the computer detected security enabled WiFi networks but failed to connect with them as shown below.

As evident from the error message above and pretty descriptive error-icon shown below, Windows XP SP2 is having issues trying to negotiate security certificate. To fix this, enabling WPA and WPA2 encryption support on Windows XP in Wireless Group Policy (WGP) we need to install KB917021 update from Microsoft.

Raspberry Pi does not feature an power on/off button, if it's receiving power it's ON and if not OFF. However, it is required to do a graceful shutdown or reboot as to prevent any operating-system corruption. Rebooting and Shutting down Raspberry Pi can easily be achieved by using "sudo reboot" (sudo if not using the root account) and "sudo shutdown -hP now" at the terminal. These commands can also be used over SSH terminal if you are running your RasPi headless (without a screen attached) or remotely over network.

Our mobile phones contain important data - be it our phone-book, pictures, videos or other documents. Things can get really messy in-case of a lost or non-working phone, and online mobile backup services are the answer to this problem.

BullGuard Mobile Backup 12 is one such handy service, the utility is supported on all major mobile operating-systems - Apple iOS, Google Android and Nokia Symbian. The subscription based service offers seamless, encrypted, automated and hassle-free mobile data backup in the cloud with web-access. Best of all - it supports seamless data migration between two different devices.

BullGuard Mobile Backup 12 is now available for free (2GB Plan) for 12 months under a limited quantity promotion, just follow the instructions and grab your own online mobile backup account for free.