qualcomm USB driver doesnt get installed

  • I'm trying to install stock ram for my oppo A57. To do so, I've got to install Qualcomm USB driver but when I check in device manager it is not showing there. have watched many fix videos in youtube where I saw QHSUSB_bulk driver (its where you update your qualcomm driver) which was also missing form my computer. please help as i could not locate neither Qualcomm driver nor QHSUSB_bulk.

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