I understand how this could be frustrating. As the restart/reset is not helping the situation, I recommend downloading the Smart Switch app toy your PC, and using the Emergency Software Install function to reinstall the software. You can download the app at https://www.samsung.com/us/apps/smart-switch/.
Hi, I have an identical problem also with a Samsung Galaxy Tab A7 (SM-T505N) which has become stuck in a boot loop with the same error message. I've installed Samsung Smart Switch as suggested but it never detects a device when the USB cable is connected. As mentioned by @user6zmIneAb4o even choosing the Power Off option fails, as it immediately turns back on. I've tried holding the Power and Volume Up keys but cannot get it it give the full recovery options to erase the device. Any help appreciated.
Hello! If this is still occurring after trying the accepted solution please send us a private message with your full model and serial number so that we may look into service options for the device!
