HOW TO DOWNGRADE ON IPHONE 5C
Step 1. install the coolbooter repo https://coolbooter.com
Step 2. Install coolbooter from the repo
Step 3. Open the coolbooter app from the homescreen
Step 4. Click install
Step 5. Click settings and choose the amount of storage you want
Step 6. Choose your os you want to download (Ios 7 or later) ios 6 will not work
Step 7. Add a custom boot logo (if you want)
Step 8. You can enable verse boot if you want verbose boot makes it to not show the apple logo and will show what’s going on behind the scenes
Step 9. Reboot when it says to reboot
Step 10. Go in the app and press boot it will tell you to press the power
Step 11. Install the untether (untether makes it so when you restart it will only go into your ios you chose not 10 ) then boot into ios 9 via coolbooter and you should be done