Nandroid v2.0 - Full NAND backup and restore tool (tried and tested!) Nandroid v2.0 - Full NAND backup and restore tool (tried and tested!)
* What is Nandroid Backup v2.0? Nandroid Backup is a set of tools and a script that will enable anyone who has root on their G1 and has the engineering/dev spl bootloader [1] (or has a dev phone) + a recovery image with busybox and adbd running as root [2] to make full system backups. These can then be restored using the fastboot [3] commandline tool and your phone in SPL/bootloader mode (hold camera + power). This allows you to create regular backups of your entire phones NAND flash so that you can restore a backup when something breaks.
Its backup method works on a level that allows you to completely break, wipe or corrupt any or all partitions and still restore the phone to a working state within a few minutes. [FAQ] Adding UV/OV to your OC kernel. Nandroid Backup Video Tutorial.