During production, they can apply ipatches to the bootrom of the Nintendo Switch in order to patch the Fusee Gelee exploit hence the term ipatched consoles. The bootrom is read-only once it leaves the factory making the exploit unpatchable via a firmware update making it a hardware-based exploit. Also, the first ipatched unit was reported in July, not June. And keep in mind, this was just a report. There may have been consoles purchased earlier that were never reported or were bought later than the date they were manufactured. July is a very rough estimate as an indication to whether or not a console is ipatched. A much better indicator is the serial number.