GDR1, GDR2, GBR3, Amber, Black and so on are firmware updates. Firmware updates are not removed by doing a hard reset or reset to factory setting. Firmware is only updating by flashing another firmware into the device.
On the other hand the Extra+ Info (which shows you have Amber) you had before the reset was gone after. You just get it again or the Store offers it to you as an update sometime later.