A valid NAND backup should be one of the following sizes in most situations.
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Occasionally, you will get a backup with a different size than one of these listed. It is fine for a backup to be larger than expected, just ensure that it is never *smaller* than the sizes listed.
Note that a *min size* NAND will always be the smallest possible size for the purpose of saving space, and may not match the size of other NAND backups from your device. 이는 문제가 되지 않으며 다음 크기 중 하나와 일치하는지만 확인하세요.