I just checked XDA Developers, and I can't find the stock ROM for HTC Desire C. Is it actually discontinued, and is my desire outdated?
In xda found this.
First download and install the zip from this thread, this will bring you back to stock
If you want to flash over your recovery and kernel Do this after you have flashed to zip, if you do it before you cannot flash any zips at all! Follow these command carefully to flash back to stock recovery:
fastboot flash recovery recovery.img
fastboot flash boot boot.img