I assume you want to get Root rights? But on the latest releases of the SM-T290 model, this is not possible. To root, you need to install the android loader 9, since protection is enhanced in Android loaders 10 and 11 and it is impossible to install a custom rooted kernel or TWRP recovery. Try flashing the attached android bootloader 9 as part of the AP in ODIN. If there is an error or after that the device will not be able to boot or will boot, but with a black screen without an image, then I'm sorry - it's not fate to get Root rights and then there is no point in fighting with Prenormal...No, I didn't open developer options. Before installing software, oem unlock was hidden. prenormal checking never comes.
PS download the file and unpack the zip archive to tar, then use it in ODIN. If there are problems, flash part of the BL from the current firmware...