I face a unknown damn problem by using the tool which was provided in this thread.
My condition:
1. 9R with colour os LE2100_11_A.08, unlock bootloader also.
2. No Qualcomm driver and plug in the USB that show the QHSUSB_BULK, then I select the folder which named QHSUSB_BULK and install = Recognised
Or install Qualcomm 9008 driver first which is located in the folder= Recognised
3. OnePlus and Qualcomm's driver had been checked install and launch MsmDownloadTool V4.0 = Launched without errors
4. My 9R is 8gb ram + 128gb rom so I choosed the ddr4 with target India. Then vol up/down + plug in the 2.0 USB slot.
5. Every 18s ****in stop by itself and show { Sahara Communication Failed, please try again after power off phone (FH:258)..........
Try the different USB cable, USB slot, laptops, desktops...... nothing changes.
I had been flashing a variety of phones that never met this issue before... really annoying.
Please help, thx