[YU Yuphoria] Naman Bhalla:
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INSTALLING PROPER FASTBOOT AND ADB DRIVERS​

There are a lot ways to install drivers and a lot different drivers are available too,but,the ones that have always worked for me,are from PdaNet.So,here I recommend using these.

Step 1 :- Download PdaNet from here :- http://pdanet.co/bin/PdaNetA4181.exe

Step 2 :- Install them and follow the installation steps properly (Especially when to connect the phone. HINT :- Phone should not be connected in the beginning and has to be connected only when asked for.There might be a notification in your phone to allow Debugging access to your computer,accept it.)

Step 3 :- After the installation has finished,download Android Slim SDK from here :- http://fs1.d-h.st/download/00081/08w/AndroidSDKSlim.zip and extract them on the desktop. (Keep the phone connected to the PC during all this.)

Step 4 :- Open the extracted SDK folder on the desktop and open the platform-tools folder inside it.

Step 5 :- Inside the platform-tools folder,press Shift Key + Right Click and select “Open Command Window here”

Step 6 :- A command window will open.In the command window,enter the command :-

adb devices

If it shows your device,woohooo !!! Your drivers have installed !! If it doesn't,try uninstalling all earlier present USB Drivers from your PC and then again install PDANet . If that too doesn't work,tag me in the thread and I will try to help you to my best .. !!

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UNLOCKING THE BOOTLOADER​

Step 1 :- Make sure you have proper ADB and Fastboot Drivers installed and working.See Part 1 for details.

Step 2 :- Go to Settings -> About Phone of your device and tap on Build Number 7 times to unlock the Developer Options .

Step 3 :- Go to Settings -> Developer Options and turn on ADB Debugging .

Step 4 :- Connect the phone to PC.

Step 5 :- On your PC, inside the platform-tools folder (See Part 1),press Shift Key + Right Click and select “Open Command Window here”

Step 6 :- In the command window,enter the command :-

adb reboot bootloader

The phone should boot into the fastboot mode.

Step 7 :- In the command window,enter the command :-

fastboot -i 0x2A96 oem unlock

Step 8 :- It should show you a prompt to press volume up button on your device.Press the volume up button.

It should unlock your bootloader.

Step 9 :- In the command window,enter the command :-

fastboot -i 0x2A96 reboot

The phone will reboot and will do some processing and will finally boot up.

Woohooo You have unlocked the bootloader….Now you are open to rooting,flashing ROMs etc. !!!

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FLASHING A CUSTOM RECOVERY (TWRP) VIA FASTBOOT​

Step 1 :- Make sure you have proper fastboot and adb drivers installed (Part1) and bootloader unlocked (Part 2).

Step 2 :- Download TWRP Recovery from here :- https://s.basketbuild.com/devs/vishal_android_freak/yu/yuphoria/ and put it in the platform-tools folder on the Desktop (Part 1).Rename the Recovery file to recovery .

Step 3 :- On you device,in Settings -> About Device,tap on build number 7 times to unlock the Developer Options.

Step 4 :- In Settings -> Developer Options,turn on ADB Debugging and turn off Update Cyanogen Recovey.

Step 5 :- Connect your phone to PC.

Step 6 :- On your PC, inside the platform-tools folder,press Shift Key + Right Click and select “Open Command Window here”

Step 7 :- In the command window,enter the command :-

adb reboot bootloader

The phone should boot into the fastboot mode.

Step 8 :- In the command window,enter the command :-

fastboot -i 0x2A9 flash recovery recovery.img

It should flash recovery on your device.

Step 9 :- Remove the device from PC and remove the battery and put it again and power on the phone….

Woohoo …Now you have TWRP Flashed !!!

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