I got the latest version of SP Flash Tool.
Downloaded the stock ROM given in the beginning of this thread (India 105 one).
Did the ADB drivers in my computer from same model (another phone).
Did the VCOM drivers as said. (DA and preloader both added manually through device manager)
NOTE: I tried with both drivers individually too! Same error!
Kindly tell me what I am doing wrong here? Thanks!
P.S: Phone is stuck in bootloop, no Huawei logo, screen blank. Not going into recovery either.