Back up NVRAM (IMEI) before flashing. Miracle Box has a “Backup NVRAM” option under the Mediatek tab. If you lose IMEI, you cannot make calls.
Once finished, unplug the USB cable, pull the battery out and put it back in, and power on your Nokia TA-1235. It might take a minute or two longer than usual to boot up for the first time. Are you encountering a specific error code in Miracle Box, or would you like a link to a tested firmware file for the Nokia TA-1235? RJ - TA-1235 Nokia 150 (2020) Original Nokia ... - Facebook
Flashing modifies the core system software. Proceed only if you know the risks. I am not responsible for permanent damage or data loss.
Download the “UserData” included version if you want to avoid FRP after flashing. Download the “Empty UserData” version if you want a clean, factory-like state.
