[Oukitel (All phone models)] robneymcplum:
No worries, I'm on the same windows 10 as you, and use opera as well, (which uses chrome anyway) but the browser doesnt matter...

I'm using spflashtools 5.1648.00: http://www.mediafire.com/file/qwgshpgipx0d4ol/SP_Flash_Tool_5.1648.00.rar

Marshmallow rom version U7_Plus_V20.0_20161220: https://mega.nz/#!C49WQbbT!YjPK66SNtsKrVBlZb7GvA-EpjiWQYrHItRDMPhDfBcs

I had to do THIS before I could do anything else, install the vcom drivers following this exactly: https://xdaforums.com/elephone-m2/help/windows-10-mtk-vcom-usb-drivers-32-64-t3267033 If you have installed some drivers before (mtk/adb/android general...) then delete them, uninstall them, reboot pc THEN do this thing first, do the reboots and then start with spflashtools.

---------- Post added at 11:27 AM ---------- Previous post was at 11:10 AM ----------

Now, install this using the inbuilt installer: http://mtkusballdriver.com/download/mtk-usb-v1-0-1 and reboot pc once done.

Download the rom, unzip it to desktop, open first window, then second one and drag the folder (not the chinese files, just the u7_plus folder) to the desktop, delete the previous, just unzipped folder (with the chinese files in). Your left with one u7_plus folder on the desktop.

Then, open the flash_tool.exe with right click, run as administrator, and select 'scatter file' button, then find the MTK6753m scatterfile in the ut_plus rom folder on your desktop. Make sure your phone is unplugged from the PC, press 'download' in the flash tool and the 'stop' button will change colour. Then remove your battery, put it back in, then plug the phone to usb and the bottom bars on the flash tool should go red, then purple, then a slow yellow bar. Keep waiting until a box with a green circle pops up saying OK.

Unplug the phone and power on, leave it, could take 2/3 minutes.

Hopefully you'll have the stock marshmallow rom working.

NOW BACKUP YOUR NVRAM USING THE GUIDE AT THE START OF THIS VERY THREAD!!!!!!

If you want to stick with marshmallow, for xposed working or similar then you'll need the TWRP from here: http://www.needrom.com/download/u7-plus-twrp-3-0-3/

On your phone, go to settings/developer settings and enable usb debugging and OEM unlocking. Turn phone off.

Open spflashtools again, same scatter file, untick every box and retick recovery, in the address bar to the right of the tick boxes, double click the recovery area and locate the TWRP file you've just downloaded, press download and plug your phone in, turned off.

once green ok is done, unplug phone, hole volume up and power til the menu comes up and select recovery. You now have TWRP working.

If you DONT want marshmallow, you want nougat, then dont bother with TWRP just yet. Download THIS nougat from here: https://mega.nz/#!00BG2QpB!PMTI7cHGU6gUoDHd8kxXdGa1yKZ6YUpBXc3z-7yIFds and using spflashtools flash as before

BUT SELECT FIRMWARE UPGRADE/UPDATE NOT DOWNLOAD!!!!

After thats flashed and booted, it will give you an OTA update on your phone, do that.

Download this to desktop, unRAR it and drag the 2 zip files to your sdcard on your phone: http://www.mediafire.com/file/tdtv1xdy2m3g8c0/SU_BU-June_2017.rar

Then install THIS particular TWRP: https://www.needrom.com/download/u7-plus-twrp-3-1-0/ using spflashtools as described above for the marshmallow TWRP and reboot into TWRP, change the language to english, flash superSU and reboot, turn phone off, reboot to recovery and flash busybox and reboot.

You now have a rooted nougat stock rom

---------- Post added at 12:00 PM ---------- Previous post was at 11:27 AM ----------

Or..... if you can only get marshmallow working, or dont like stock nougat, or want a good custom rom, here is CRdroid android 7.1.2 which you can flash the zip in TWRP on marshmallow or nougat: https://drive.google.com/file/d/0B6M_SNwjszLTY191c3NwUXpBMGs/view

The camera doesnt work, you have to boot the rom, then reboot to recovery and flash 'fixcam3.zip' from the attachments here. Reboot phone, reboot to recovery AGAIN and flash 'fixcam.zip' then and FINALLY then, the camera works.

Sometimes the sims wont work after the install of the rom, thats no problem as you just flash the NVRAM backup you made earlier.