SM-A300F Cert File

CERT file is exclusive for each phone and contain signature.
This file exist in Samsung information from day of product your phone.

For Qualcomm device you can't scan certainty however can solely WRITE certainty from United Nations agency have one from his device and Share it, (obvius not in same country/operator itc..), or from any server which will merchant these.
You not harm you device if certainty is nice,
BUT
FIRST should want OF CANCEL ORIGINAL certainty, the sole mode for be intimate is Wiping EFS and once WRITE new one.

For Exinos devices you'll be able to READ/WRITE certainty.

WARNING: FOR YOU SECURITY, NOT FORGOT OF to try to to "BKP QCN WITH NETWORK AND ALL" initial OF "WIPE/Repair Security/EFS", IT'S vital if anythingh goes wrong, additionally take a look at initial if you QCN is write back first of Erase ORIGINAL certainty, if you can't STOP HERE, not WIPE/Repair EFS in devices.

NOTE:
FOR QUALCOMM, you'll be able to WRITE certainty FROM alternative N900 to alternative N900X IF THIS HAVE "CERT" WITH FULL unfastened AND IMEI/NETWORK OK!!!
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