[header] How to master reset a g1 [title] Do a hard reset. [step] That means to remove everything from your g1 and and " start it over " by re-installing the os, which is on the chip. A soft reset is less aggressive. 
Reboot the g1, like you would be doing to your computer. [title] Power down your phone (you don't need to if your phone is already closed or has a dark screen).