Can't get SP Flash Tool working with Blackview BV5500 to install TWRP Recovery I have installed Phone drivers (I have BV5500Plus &amp; BV9500, same chipset MT67xx, same driver). For both phones, VCOM drivers are seen in Win10 if I connect turned OFF phone onto USB with Vol-DN pressed.
BV5500 bootloader is UNLOCKED via fastboot.
The method I use for connecting the phone is: (phone off): Vol-DN + onto usb.  Keep Vol-DN pressed until the phone enters Factory Mode menu. Release Vol button.
The instructions for downloading custom TWRP recovery to phone is to get SPFT setup for download BEFORE phone is connected to PC =

select DA file (in SPFT files)
select scatter file (from stock rom files)
select only 'recovery' partition to download &amp; recovery.img file for TWRP
press Download button

The problem seems to be how SPFT needs phone to be connected when turned OFF (from what instructions I read).  VCOM driver for these phones is only visible in SPFT once driver is visible in Win10 (which is obvious to me).  However that doesn't fit with the instructions.
Before phone has an active VCOM connection, there is only COM1 visible (the printer). Therefore VCOM connection cannot even be selected in SPFT settings.
If I configure SPFT only when phones VCOM is visible in Win10 (so setting SPFT COM port to COM9 [shown in Device Manager but also only other option in SPFT] for example), this does not help.  Even when correct COM port chosen in SPFT, Download/connection still does not take place.  Zero activity shown.
I could try flashing the BV5500 from fastboot, but I tend to trust SPFT better, since its working with the scatter settings for partition locations. Also, SPFT seems to be the supported method of flashing stock rom if anything goes wrong, so I'm REALLY HOPING to get SPFT working.
What am I doing wrong here?  Should the progress indicator in SPFT show something immediately, or take some time to connect &amp; transfer?  I'm not waiting long until I hit Stop button, &amp; the program does recover/respond after maybe a minute/30 secs of pressing Stop.  Phone continues to work after these failed attempts.
There ARE SPFT logs.  I've looked at them, cannot understand them.  Maybe solution lies there?  Any help understanding the logs?  I can post some log contents here....
@alecsx explained to me that I should be using SP Flast Tool with USB connection, not VCOM connection, even though SPFT instructions were to install VCOM drivers (so I assume VCOM was needed).
I already had drivers installed, so set up SPFT with DA file from within SPFT files, and scatter.txt from stock rom files. Then =

turn phone off

Press Vol-Dn + connect usb

SPFT sprang into life &amp; immediately initiated action (be action Readback or Download)


Seems the only part I needed to learn was using USB connection.