I was on 4.4.2, rooted, with safestrap. In a moment of stupidity I attempted to do a factory data reset from the main phone GUI. The phone powers on, says booting recovery in blue above the custom samsung logo, then powers off, and repeats this process enlessly. I have attempted to get into download mode, but to no avail thus far. What are my options, will a usb job (dongle) help, is there an sd card unbrick.img? What can I do?