Need HELP! Black screen 8s

Made some mistakes loading a model and could not correct. Decided to put the radio back to Devo and start over. Opend DfuSE Tool found the radio and file hit Upgrade file, the file loaded correctly and bam! black screen Now regardless of the power switch position the red light stays on and screed is black. Unit is DOA..

deviationtx.com/faq

- HELP! I can't put the original firmware back!
or
- HELP! My transmitter won't turn off

Question:
Found the faq answer and now have the screen back on. Problem is the radio is in the same condition ie my models are gone. I thought running the upgrade tool would put it back to devo where I could start over?

linux-user

Thanks for you help.
My model file somehow became corrupted. When I deleted it and replaced it with a new blank one all is there. Problem is I did not have a recent backup for the last several models. I'll have to start from scratch but at least I'm not buying a new radio!

Thanks Again!