Here Vivo V9 (Vivo 1727) Bootloop Logo and restart only,
Vivo V9 Bootloop, eMMC Urgent Consumed 90%. Partition mode
Here show Step how to fix with (UFI – eMMC ToolBox)
Tutorial or how to fix by using (UFI Box)
1-Need right connect ISP via wire between phone-mainboard to UFI ISP Adapter V2, then make Identify Device ( for Check)
If Identify Device, Resualt (eMMC Urgent Consumed 90%. ) means that: EMMC of phone need fix.
2- For ,Fix eMMC Urgent Consumed 90%, Really need back up dump files ( boot1.bin, boot2.bin, ext_csd.bin and userarea_2,6,16GiB.bin),
3- Read backup Modem files ( Imei)
4-start fix ,Ready fix done eMMC Urgent Consumed 90%. Partition mode flash file Dump that backup before in to.
5-After flash Dump file, need continue to flash stock rom file . For stock rom or firmware please Dowload file according to phone device, Model name no, and Bran name / product name.
6- Flash stock Rom done, need flash Modem file that back up in to for correcte IMEI !.
HERE FREE ISP PINOUT FOR VIVO (V9) AND Vivo 1727
HERE HOW TO TEST POINT VIVO (V9)
Phone-mainboard Vivo V9
If Your phone problem with software, can fix with UFI box via ISP Pin out.