Since this device usually requires Emergency Download (EDL) Mode for deep flashing, you must open the back cover and short two specific gold pins (test points) while connecting the USB cable. General Flashing Procedure
: If the phone became unresponsive after a simple factory reset, flashing the full firmware via UMT is the standard solution. IMEI Null/Unknown Baseband Vivo 1801 Flash File Umt
Flashing the (also known as the ) using the Ultimate Multi Tool (UMT) Since this device usually requires Emergency Download (EDL)
: Installing a fresh version of Funtouch OS . Vivo 1801 Flash File Umt