Flashing an iPhone involves installing a fresh copy of the iOS operating system (IPSW file) onto the device. This is typically done to fix severe software issues, remove a passcode (which wipes data), or downgrade/update manually.
No. Flashing does not remove an Activation Lock. The iPhone will still ask for the original Apple ID after the flash. Some third-party tools claim to bypass this, but the bypass is usually tethered (resets after reboot). Legitimate flashing tools cannot crack Apple’s servers. iphone firmware flash tool link
Every flash requires an , which is the actual software package for your specific iPhone model. Flashing an iPhone involves installing a fresh copy
: Apple only allows the installation of "signed" firmware. Attempting to flash an unsigned (usually older) version will result in an error. remove a passcode (which wipes data)