With delivery and support, I am satisfied. However, the USB Jig will not work as I thought it and it is in my opinion in the product description. I own a Samsung Galaxy S2 (I9100) with Andoid 4.1.2. The USB Jig puts the smartphone in rooted and normal condition in the download mode. However, the counter is not reset. Unfortunately, that was the reason why I have ordered the USB Jig. The problem can be solved, that flashes the old boot loader uses the jig and then flashes the new bootloader thereby. Although the Counter by flashing the bootloader is reset, the use of USB Jigs is no longer as easy as I thought it and I would not buy this product, so once again. In defense of the provider I must say that the fault lies not with him. This problem will be when all USB Jigs. However, I would have found it fair if the seller would have noted in the Produktbeschriebung. Use of jigs is easy and safe. Therefore, the flash of a bootloader on the other hand for inexperienced users at risk and should be considered. To clear the counters therefore lends itself ore on the purchase of the app "Triangle Away" in the Play Store. However, to get hereby course not in the download mode.