Gionee F9 Flashing Error Flashing stuck on 1% Need help urgent . pls masters.

some Few days This Model Gionee F9 Handset continuously gone Dead 4 working hand set in this week one by one.

what i tried for Dead Recovery of handsets

Change Pc
Change usb cables
change Flash firmware and Tools

But handsets flashing not completing 100% handsets not turning On.

F9 9.0.070.P1.191114.ED5720G.HEM_HEM_ED5720G_OE.NOEFU SE firmware Version.
MDT-ASE-1.1.0-190104 Flashing Tool

Before Flashing Version image