thanks you problem resolve..... console dont want to boot up

hi my 7s friends i need help . i was trying to flash my kv in to my nand . i did all correct as i followed step by step , and how to do it . but there. now my rgh don't want to boot its on , but not boot with xbox home-brew my xell dont want to show me more details than this pic any help please will be appreciated a as heaven thanks you all...