+rep I recently purchased a $500 firmware from here. Although I don't know much about it, I could tell from our conversations that the seller has extensive knowledge in this area. My friend also bought from here, and despite my initial doubts, I am satisfied with my purchase. I hope the firmware remains stable for a long time. Unlike other places, which do not provide the FW file, this place sends it to you. This alone significantly boosts their credibility. I am not good with words, but I can say that the reasonable price and the seller's friendliness made me feel that the money spent here was worth it.