www.chinaphonearena.com

Thanks for your reply, I cannot get the build number because the phone doesn't even boot, so I cannot browse the system ui and see from settings the build number.

If the build number is the firmware version, then I think I was on the latest ota update before nougat.

a) The versio of sp flash tool is 5.1640 and I tried also with 5.1628. I also tried with the flash tool that oukitel suggested with the release of the nougat firmware.

b) First I tried with Windows 10, then with windows xp sp3, finally with windows 7 Ultimate 64bit.

c) My first flash I tried them on a laptop, now I am using my desktop that has Windows 7 64bit.

Related to fastboot I have done the following before your post

1) I pressed the power button and the volume +, got in the bootloader option and I choose fastboot.

2) Connected the device to my pc, opened a cmd, gave the command fastboot devices and I saw my device listed.

3) Executed the command fastboot getvar all and I saw bootloader unlocked: no

4) I executed the command fastboot oem unlock, on the screen of the device shows the warning that you mention and I press the volume + to unlock the bootloader. Immediately the command fails and in my cmd windows I think it says remote: oem unlock is not allowed.

Remember I didn't have enabled the developer options, so the usb debugging is off and also oem unlock option is off.

Does booting to fastboot with the adb command enables me to unlock the bootloader? Also do you know if the official roms that are on needrom are signed or not? Finally do you have a signed rom from oukitel that can upload with sp flash tool to see if this makes any change?

Thanks again for your time. Oukitel doesn't even respond to my mails. +_=

@Hazuki

I have had NO problem to unlock the bootloader.
However, for now please forget about bootloader.

Please keep your Win 7 Ultimate !
It seems to be the only Windows OS version where Nougat firmware works.
The next screenshots are the proof of it :




STEPS :

1) Download the latest version (5.1648.00) of SP Flash Tool :

http://www.mediafire.com/file/qwgshpgipx...648.00.rar

2) Download the Nougat stock firmware :

http://mega.nz/#!00BG2QpB!PMTI7cHGU6gUoD...c3z-7yIFds

3) Unrar the stock firmware.
4) Open SP Flash Tool.
5) Load the scatter file inside stock firmware folder.

VITAL STEP : 6) Select FIRMWARE UPGRADE !

7) Click Download.
8) Connect your turned off phone to the pc with usb cable.
9) When flash process finished (100%) disconnect from the pc.
10) Press power button.

NOUGAT TWRP 3.0.3 :

a) Download the Nougat twrp :

http://www.needrom.com/download/u7-plus-nougat-twrp/

b) Download the rar with SuperSU zip and BusyBox zip :

http://www.mediafire.com/file/g4hubpximc..._SU-BU.rar

c) Copy the two zip into your microSD.
d) Tap on "Settings" -->"About phone" --> "Build number".
e) Tap 7 times on "Build number".
f) Tap on "Developer option" and enable "OEM unlocking" and "USB debugging".
g) Turn off the phone.
h) Open SP Flash Tool.
i) Load the scatter file inside the twrp rar.
j) Click on Download (Download Only mode).
k) Connect your phone to your pc with USB to start the flash process.
l) When it finished, press "volume up" and "power" buttons simultaneously.
m) Select the first white line with volume up.
n) Press volume down to confirm.
o) Tap on "Install".
p) Tap on "Select Storage" and tap on "Micro SDCard".
q) Tap on "UPDATE-SuperSU-v2.79-20161211114519.zip"
r) Swipe to confirm Flash.
s) When installation is finished, swipe to reboot.
t) Tap on the icon of SuperSU to activate it.
u) Reboot into twrp recovery once again
v) Repeat the same steps to install Busybox zip.
w) Enjoy.

Regards

Ok I will try again when I get back from job, I will let you know, thanks again. Yesterday I flashed the 20161220 with format all+download option. I will try the firmware upgrade today.

(2017-01-26, 20:48)Hazuki Wrote: [ -> ]Ok I will try again when I get back from job, I will let you know, thanks again. Yesterday I flashed the 20161220 with format all+download option. I will try the firmware upgrade today.

Format All + Download ? NOOOOOOOOOOOOOOO !!!

Now you have lost your two IMEI
Now you can not use your SIM cards

NEVER DO "FORMAT ALL + DOWNLOAD" !

Well I know that I have lost everything but that was what the sp flash tool suggested. The IMEI numbers are in the back of the phone under the battery. Is it possible to save the phone now or not? I have seen guides you can write back the IMEI number, is this why the phone doesn't boot because it cant find the IMEI numbers? Even with the IMEI numbers deleted it should have booted.

(2017-01-26, 22:02)Hazuki Wrote: [ -> ]Well I know that I have lost everything but that was what the sp flash tool suggested. The IMEI numbers are in the back of the phone under the battery. Is it possible to save the phone now or not? I have seen guides you can write back the IMEI number, is this why the phone doesn't boot because it cant find the IMEI numbers?

Do not blame SP Flash Tool if you have erased your NVRAM.
Do not worry. It is a common mistake. I did too.
The boot has nothing to do with IMEI.

Ok I will try again this evening, can you use this app to tell me if the device has the emmc bug

https://play.google.com/store/apps/detai...emmc_check&hl=en

(2017-01-26, 22:54)Hazuki Wrote: [ -> ]Ok I will try again this evening, can you use this app to tell me if the device has the emmc bug

https://play.google.com/store/apps/detai...emmc_check&hl=en

Please do not experiment with your phone anymore.
You have done enough damage to your phone.
Please follow my steps to flash the stock firmware.

Ok, I will do that, can you upload somewhere the drivers that you have installed in your computer for this phone to use them instead of the drivers that I have found on the internet. It's the only thing that I haven't tried.

(2017-01-26, 23:14)Hazuki Wrote: [ -> ]Ok, I will do that, can you upload somewhere the drivers that you have installed in your computer for this phone to use them instead of the drivers that I have found on the internet. It's the only thing that I haven't tried.

Install the next driver on your Windows 7 Ultimate :

http://www.mediafire.com/file/zdteabot88...453.03.rar

Then, flash the stock firmware with the next version of SP Flash Tool :

http://www.mediafire.com/file/qwgshpgipx...648.00.rar