01 lb7 serial number changed...details inside

[Nmband13]

01 lb7, This ecm has just given me a $0333 security access denied $33 code. all my stuff is updated build 277. Can read the serial number in the ecm, its different than my tunes have for the last 4yrs. Serial number WAS: 0335IG034601 Now:0335M00I2134. Wont allow me to Read, Write, or Check Vin License...throws this error immediately. Truck runs fine, dsp5 all work, ECM toast?

Vin: same
hardware: same
calibration id: same
OS: same
serial number: different

[Nmband13]

Programmed!!

Had to check all the boxes, alternative ways, alt keys, assume faulty lock, high speed.