: Using the wrong firmware or the "Format All" option can lead to the loss of your device's IMEI and NVRAM data, causing network connectivity issues. for a specific version or a step-by-step guide for a particular device? Working with SP Flash Tool - GeeksforGeeks
: Removing carrier bloatware by flashing a generic "Global" or "Unbranded" firmware version. flashtoolv501
Ultimately, the persistence of the search term "flashtoolv501" proves one truth in the tech world: : Using the wrong firmware or the "Format