A nandroid is the name for a complete backup or image of your device. It can be performed in clock work mod (cmw) .

Clockwork mod is a custom recovery because it is a second of tools that can used without booting an os. Think of it has an additional BIOS. When rooting and jailbreaking, u will want to install the clockwork mod. It is the workhorse that has utilities for backups /restores /wipes and installing unsigned zip updates.

Rom manager is an app accessible in the os that allows quick access and integration with clockwork mod. Rom manager can update and install clock work mod versions as well as automatically booting into clock work mod for quicker access to those functions. Cwm and Rom manager were started by the same person. Rom manager let's u download Rome and then boots into cwm to backup and install them.

U will need a custom recovery... (I know of two) cwm or armon ra. They permit u to perform the backup. Rom manager isn't necessarily needed but its useful and is well integrated into cwm.

A nandroid is the name for a complete backup or image of your device. It can be performed in clock work mod (cmw) .

Clockwork mod is a custom recovery because it is a second of tools that can used without booting an os. Think of it has an additional BIOS. When rooting and jailbreaking, u will want to install the clockwork mod. It is the workhorse that has utilities for backups /restores /wipes and installing unsigned zip updates.

Rom manager is an app accessible in the os that allows quick access and integration with clockwork mod. Rom manager can update and install clock work mod versions as well as automatically booting into clock work mod for quicker access to those functions. Cwm and Rom manager were started by the same person. Rom manager let's u download Roms and then boots into cwm to backup and install them.

U will need a custom recovery... (I know of two) cwm or armon ra. They permit u to perform the backup. Rom manager isn't necessarily needed but its useful and is well integrated into cwm.