If the phone is locked, you can perform a factory reset via Recovery Mode (hold Power + Volume Up) to wipe all data.
Flashing raw dump files and NV data is not the same as standard Odin updating. You need specialized hardware or software exploitation tools. Required Software Tools samsung a15 5g a156edxs1axa4 dump file nv file link
Without a healthy NV partition, your phone will display "IMEI Null," "Unknown Baseband," or "No Service." Decoding Firmware Version: A156EDXS1AXA4 If the phone is locked, you can perform
Because direct linking is prohibited here, here is a replicable search string for Google: If the phone is locked
Before proceeding with any flashing or repair operations using dump files, ensure you have the correct tools (Odin v3.14.4 or higher, or your preferred professional box) and the necessary USB drivers installed.