firmware vivo y91 pd1818ef qualcomm

How to Flash Vivo Y91 PD1818F Use QFIL: Download all the above materials then Extrak all the files that have been downloaded. Install the USB Driver and install "QPST / QFIL" on your Laptop or PC. Turn off HH (let stand for 7-10 seconds to make sure it is dead) Connect Lenovo to PC using "USB Cable" while pressing "Volume Up Volume Down Button". spek hp vivo 1820