Install Stock ROM on O+ 8.37z
So here's the working O+ 8.37z , tried and tested on my own O+ 8.37z . Some have tried flashing the O+ 8.37 but experienced boot loop or soft brick on their device. Here's the Step-by-step instruction on flashing stock rom on your device. Download: SP Flash Tool O+ 8.37z Stock ROM Step 1: Extract the O+ 8.37z Stock ROM from the zip folder. Step 2: Open the SP Flash Tool, choose the scatter-loading and look for the extracted folder of O+ 8.37z Stock ROM and choose the MT6572_Android_scatter file. Step 4: On the SP Flash Tool choose the Download Option. On the Drop down option, Choose whether Download Only, Format All + Download or Firmware Upgrade. If your phone got infected by virus choose the Format All+ Download to install a fresh stock rom. Step 5: On SP Flash Tool click the download to start the Flashing. Step 6: Turn off your mobile phone and plugin the cable while holding the Volume Down Button , if the flash started releas