Install Stock Recovery on Unrooted Phone That Cannot Connect to a PC

Hey,

I own a WileyFox Storm that runs Cyanogen OS (kipper) as stock. A while back, I tried to root it, but failed so gave up. As it turns out, I forgot to get rid of the TWRP CR (which was an edition specifically designed for the Storm). There is now an update which I would like to install, but obviously it does not work because I do not have stock recovery.

MY PHONE IS NOT ROOTED!!!

I was going to flash the stock recovery using ADB fastboot, however my phone is now refusing to be recognised by my PC. Yes;

- I have the correct drivers installed.
- I have enabled USB debugging (I have also tried disabling it).
- I have tried rebooting both my phone and PC.
- I have tried rebooting my phone and wiping Cache and Dalvik Cache.
- I have tried with a different USB cable, and tried using a different USB port.
- I have tried removing my SD card.

My phone says that it is charging (which is is) when it connects to my PC, but nothing comes up, anywhere. No notifications (on both devices), ADB nor fastboot recognises it, no *chime* sound on my PC.

I cannot try using a different PC (I only have one). So, how can I replace the TWRP recovery with stock recovery???

Thanks :))

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