hallo
device: MRD-L21A 9.1.0.415
cpu: MT6761
storage type: EMMC
extraction phisical, full emmc with spflashtool, file ROM.bin
need to extract photos, owner not remember pattern,
i not managed to extract with oxygen and Pa, what i can try?
Is the "vol 46" user data partition encyrpted? It says encrypted in your photo example which would be the reason you cannot access the contents of the partition.
MRD-L21A uses file based encryption. Physical extraction like this is useless and no tool supports decrypting physical MTK dumps, and extrating proper encryption keys. FBE also means that you cannot bypass the passcode. It's required to properly decrypt user data. It's also F2FS partition, which Autopsy doesn't support.
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If you had the passcode, you could take a look at upgraded MTK Live method in UFED (beta), but looks like this chipset is not supported yet.