The only way an Android user can get more out of their device, regardless of what device it is, is by flashing a custom ROM onto it. A custom ROM, by replacing its stock Operating System of a device, completely alters both the appearance and the functionality of the software part of an Android device. The Nexus One became notoriously popular, which is why a slew of different custom ROMs were designed specifically for the device, with the most notable one, as expected, being CyanogenMod. CyanogenMod is among the most advanced, exciting, feature-filled and stable custom ROMs out there for the Nexus One. In order for a person to be able to flash (install) CyanogenMod on a Nexus One, they need to first unlock its Bootloader and flash a custom recovery image (such as ClockworkMod or TWRP) onto it. Once a Nexus One’s Bootloader has been unlocked and a custom recovery image has been flashed onto the device, the following are the steps that a person needs to complete in order to flash a CyanogenMod custom ROM on it:
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