[Yu Yureka Black Guides, News, & Discussion] Deleted member 12324997:
So, i've been tinkering a bit for days over my Wiko UFeel Prime (i had even heard this one is the "clone" of the YU Yureka Black and/or viceversa around) and found a ton of problems at first due to the manufacturer (Tinno) putting a ton of "walls" to make modding impossible, like:

Removing various Fastboot commands (oem unlock, oem unlock-tinno, reboot edl, general bootloader info, refuses reboots to recovery, bootloader and system, etc.);

Making updates/downgrades impossible, just in case last time you've touched the device and upgraded to the latest firmware from Wiko (fun fact: the update app pings a site called https://frogs.wiko-ota.com, but sadly it has never been archived before and nowadays shows chinese text saying how the content doesn't exist) and you're completely stuck with the shady apps and trackers Tinno put on their P7 board;

You couldn't use stuff like adb push or upgrade from recovery because they force you to use their proprietary tool on Windows to do such (they bundle all of their firmware updates into an huge .exe file, despite being inside a .zip file);

And more...

Despite everything, i found one crack into the phone to take advantage of: you can reboot on EDL mode via adb

And that's where my guide begins!

Requirements:​

In order to convert your Wiko to a Yureka Black, you must need...

Your Wiko UFeel Prime (whatever firmware, either it is M or N);

Another Android phone (must have: Magisk root, OTG Cable support);

An OTG adapter;

A charging cable (must be able to transfer data);

Preparing your rooted Android device:​

Moving on, your device must have the following apps installed

ADB & Fastboot Tools;

Fox's Magisk Module Manager;

Terminal Emulator;

After got the latter, do the following steps afterwards

Open the Fox MMM app;

Tap the search button (placed on the bottom right corner of the screen);

Type "QDL" or "Qualcomm" into the bar;

You should find a tool called QDL For Android NDK;

Tap on "Install";

Tap on "Install Module";

Wait for the module to install;

Reboot your device;

After reboot, open the ADB & Fastboot tools app;

Allow root perms;

As a last step (for now), you must hop over the YU Yureka Black QFIL files page and download the zip file under the Stock M File hyperlink- after doing that, extract the .zip file wherever you want (with your fav file explorer of choice) (for simplicity's sake: extract the zip out of the Download folder. After extraction, rename the "YU5040" etc. etc. folder as simply "yu"- the purpose of it will come in handy further on the guide).

As of now, leave your secondary phone as is and move to the Wiko phone.

Preparing your Wiko UFeel Prime:​

If you had setup your secondary phone successfully: preparing your Wiko phone will be 10 times easier than the latter.

Just follow thru the following steps:

Go to Settings;

Tap on the "About" section of your device;

Tap a ton of times on the Build number, until the following will tell you you had unlocked Developer Settings;

Go back;

Tap on Developer Settings;

Scroll until you find USB Debug and enable it;

As a last thing, if you prefer, jump straight to the home menu (on your Wiko), then lay the phone together with the other device on a safe spot where nobody could interfere on the work.

The next title will introduce you to the "delicate" part of the guide: but also the moment where your Wiko will finally get converted as a YU Yureka Black and allow modding!

Converting your Wiko:​

Now, follow carefully the steps i'm about to give

On your secondary device​

Open the ADB & Fastboot tools app;

Connect on the device's slot the OTG cable;

On your Wiko​

Connect the charging cable to it's slot;

Connect the cable's end (the USB part) to the OTG slot attached to the other device;

Tap on "Allow" if it asks you about USB debug (or generally allowing a pc to get access to the device);

On your secondary device​

Tap on the "Refresh" button (placed on the top right part of the app's UI);

Scroll on the bottom of the screen;

Type reboot edl on the writing camp;

Tap "Execute" (which is next to the zone where you wrote the command);

If you came this far and your Wiko effectively turned off plus the notification LED started blinking RED: this means your Wiko successfully booted into EDL mode!

Now, let's move on the focus to your secondary device.

On your secondary device​

Quit the ADB & Fastboot tools app;

Open the Terminal Emulator app;

Write the following commands:

cd /sdcard
cd yu
su

After typed these commands on the terminal, copy and paste this string of code on your terminal:

qdl --debug --storage emmc --include /sdcard/yu /sdcard/yu/prog_emmc_firehose_8937_ddr.mbn /sdcard/yu/rawprogram_unsparse_upgrade.xml /sdcard/yu/rawprogram_unsparse.xml /sdcard/yu/patch0.xml

Once done, tap send on your keyboard and let the program do it's magic.

The wait should vary depending on your secondary device's specs (approximates 1h at max) and the speed on writing the .mbn, .img, and .tz files inside the folder over the Wiko's board- also, pro-tip, be sure to check often on your secondary device (by tapping it's screen often).

The reason?

it will avoid the device to go into sleep mode (especially if you set the backlight to a short period of time) and once unlocked it restarts the whole flashing all over again, extending the flashing wait the double.

If an accident happens (like it happened in my case) you must resort on disassembling your device's back and short the pins with some tweezers to enter back EDL mode manually, and also repeating the flashing process by pasting again the code string on the terminal.

If you don't know how to disassemble your Wiko: check here.

Also, if you don't know which pins you should press to enter EDL mode: check here aswell.

After the long wait, you should see the following behaviors:

Your secondary device will flag a disconnection on the QDL program (via terminal);

Your Wiko phone will vibrate and start booting up, showing the YUREKA BLACK text as the splash screen;

Now you can finally unlock your bootloader (note: you must type unlock-go to do the latter) and flash your device however you like!​

Thanks for following my guide!​

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Credits:

- The Yu Yureka Black modding community;

- Sosavo;

- You, for following my guide!