: Exploits require a precise, uninterrupted "handshake" between the PC and the phone. Using a low-quality USB cable, a USB 3.0 port (which can sometimes cause timing issues with older exploits), or having outdated Samsung USB drivers can lead to a communication timeout. Mode Mismatch
If the "Change CSC" option under the ADB tab fails, try the same action under the MTP tab . samfw running exploit fail
Common causes of "exploit fail" while process shows running : Exploits require a precise