If you would like to play around with a circuit simulation tool here is a freeware tool by LinearTechnology to start with.
You may download the program from here.
It is easy to work with. Just enter your schematic, select the simulation type and see what signals you get on the different nodes. The following screen shots show some of the menues and a simulation of a colpitts oscillator.
Primarily used for flashing firmware, but often bundled with NVRAM configuration options. 🔑 Engineering Mode (No PC Required)
: A specialized utility for writing IMEIs in "Meta Mode" or "Factory Mode" without affecting user data. china keypad mobile imei repair tool
: If a phone has an "Invalid IMEI," it will typically lose all cellular connectivity (Emergency Calls Only) because the network cannot identify the hardware. , or do you need help finding the original IMEI for a device you're trying to fix? Primarily used for flashing firmware, but often bundled
While IMEI repair tools are legal for restoring your own device, some applications cross into illegality: Primarily used for flashing firmware