Factory reset = still running 2.73 ROM?

[Spacemonkey]

I upgraded to 2.73 a month or so ago and everything was fine. Then, to cut a long story short, I had the battery life issue, the Facebook anti-login issue, and the anti-PC connection issue - which meant I did a factory reset a couple of days ago (settings > security).

Figured I'd be stuck with the original ROM and would have to find a way to upgrade to 2.73 without connecting to the PC. But the phone has been suprisingly slick and I've just checked About Phone and the Build No is 2.73.405.5. Does this mean it's somehow kept the ROM update? Or am I misinterpreting this?

Cheers
SM

 

[Slug]

I did a factory reset a couple of days ago (settings > security).

I've just checked About Phone and the Build No is 2.73.405.5. Does this mean it's somehow kept the ROM update?

Yup, no "somehow" about it. That's the way it works.

 

[trick202]

It's got it from the SD card, right?

anyone?

 

[JoeC]

No, he just did a factory reset...it resets from whatever ROM version is installed.

A factory reset does not flash the ROM version. That requires a different procedure, that calls the bootloader and wipes the current ROM and replaces it.

One cannot affect the ROM by doing a factory reset. It just wipes all configuration and data stored in the PHONE.