Okay so the first thing we want to do is create a Nandroid backup. This is a complete backup of our phone which we can use to fix it in case we manage to screw something up. To make Nandroid backups though, we first need to have a custom recovery. I will explain how to do this with Flashify, but to use Flashify our phone needs to be rooted first. Note that you should pay attention to your phone's battery life when doing these things because your phone can get bricked if it dies while in the middle of something.
1. Rooting your phone
These phones are very easy to root using the KingoRoot app from their website, however we will not want to use the newest version of the app but a version not older than 4.9.0. I will explain why later. To get this app, google 'KingRoot 4.9.0 APK' and download the apk file straight onto your phone. Now open it, enable 'Unknown sources' (your phone will prompt you to do this if you haven't done so already), and install. Open the app and follow the instructions, and your phone will automatically get rooted.
Once it is done rooting it will show you a screen like this.
Just ignore this screen and close the app.
Now that our phone is rooted, we can easily install a custom recovery using Flashify. You can download 'Flashify (for root users)' from the Play Store for free. Or if for some reason you don't have access to the Play Store, just google 'Flashify APK'.
Now we need an .img file of the custom recovery we are going to install that is compatible with our phone. Two users of this forum, sebi3481 and chuppito, worked on it and produced a custom recovery file that works on both the Wiko Pulp 4G and the Wiko Pulp Fab 4G which you can download here:
Be sure to thank sebi3481 and thank chuppito for their work by clicking the 'Thanks' button in the lower right corner of their post!
After downloading the img file to your phone, open Flashify, tap 'Recovery image', select 'Choose a file', and tap 'File explorer' to look for the file you just downloaded (for some reason if you select 'Downloads' instead of 'File explorer', the file will be greyed out and you won't be able to select it). Select the img file, tap 'Yup', wait for it to finish, and tap 'Reboot'. Now your phone will reboot into its new custom recovery. Swipe to Allow Modifications and you are done!
If TWRP offers you to root your phone or to install SuperSU, select no. Your phone is already rooted and we will be installing SuperSU ourselves right after creating a Nandroid backup.
In TWRP (our custom recovery), first go to the Settings to uncheck 'Enable screen timeout'. This will prevent our screen from locking while it is creating a backup. Then, go to Backup, check all boxes, tap 'Select Storage' to choose where to create the Nandroid backup, and Swipe to start the backup. These backups are quite large (over 6GB) and take quite a long time (can be over 30 minutes), so choose a place where you have enough space and don't worry if it appears to have frozen, just wait it out.
Once finished, tap 'Reboot system' to reboot back into Android.
If you followed this guide and rooted your phone using KingRoot, it will have installed its own superuser app called KingUser (or something along the lines). The problem with this superuser app is that it isn't compatible with every root app there is, so we will want to delete it and replace it with SuperSU. This can very easily be done using the app Super-Sume Pro which you can get in the Play Store for $5 (though if you've gotten this far you should already know how you can pirate it if you want to try it before buying).
Note that Super-Sume Pro only works if you rooted your phone with a version of KingRoot 4.9.0 or older, which is why we used KingRoot 4.9.0 in step 1, rather than the newest version from their website.
Once installed, open Super-Sume, grant it root access, press the blue button, and wait for it to finish. Once it is finished, SuperSU with automatically be opened and prompt you to update the binary. Tap Continue and then choose Normal. When it finishes installing tap Reboot, and you are done!
First, download and install the Xposed apk from this thread (attachment at the bottom):
Next, download the SDK and place it anywhere on your phone or SD card:
Now open Flashify, select 'Zip file', and choose the zip file you just downloaded. Select 'TWRP or Philz' (don't check any of the boxes that come up after you do), tap Yup, and choose 'Use provided'. When the flash is complete, tap reboot. Now your phone will reboot and start installing the framework which will take some time. Again, don't worry if it seems to have frozen, just wait it out. Once your phone has rebooted, you should be good to go! If somehow it did not work, try doing it again but choose 'Copy first' instead of 'Use provided'.
Remember to thank rovo89 for his work by clicking the 'Thanks' button in the lower right corner of his post!
So we messed up and somehow bricked our phone, no worries! There are multiple things we can do to unbrick it. The first thing we want to try is enter the recovery mode to either restore from a Nandroid backup, or do a factory reset. We can enter our recovery by turning off our phone (by taking out the battery and putting it back in), and then pressing and holding the 'Volume +' and 'Power' buttons. Your phone will boot up and the Wiko logo will appear, but keep on holding the buttons until the recovery screen appears. For the Pulp Fab 4G, it is possible that you have to press the power button after the Android logo appears to enter recovery.
6.1. Restoring from Nandroid backup
If you have TWRP installed and have made a Nandroid backup, simply select Restore, select the backup you want to use, and Swipe to Restore. Remember to create a backup regularly and copy it to your PC or other storage devices!
6.2. Doing a Factory Reset
In case you don't have a Nandroid backup,
TWRP: Select 'Wipe' and then Swipe to Factory Reset (do not go into Advanced Wipe).
Stock recovery: Use the physical buttons to navigate to and select 'Factory reset'.
6.3. Reinstalling the stock ROM
If you could not fix your phone using the previous methods, there's one more thing you can try, and that is reinstalling the stock ROM. You can download the ROM for your device from their website. Unlike most ROMs though, these ROMs come with a tool to install it. For this you will need a computer. As far as I know you cannot get the ROM seperately to install it in the traditional way.
Pulp 4G stock ROM:
Pulp Fab 4G stock ROM:
Extract the files to a new folder, open the exe file, and follow the instructions.
This guide is mostly finished so I'm already posting it but I will be be adding more stuff when I get the time.