: A widely used legacy tool that supports SD, SDHC, SDXC, and eMMC CID/CSD registers. Guru Meditation SD/eMMC Decoder
| Domain | Use Case | | :--- | :--- | | | Identify counterfeit eMMC chips | | IoT Device Inventory | Automate hardware asset tracking | | Bootloader/Uboot | Verify correct storage device before mounting | | RMA / Warranty | Match returned chip to shipment records | | Linux /sys/block/mmcblkX/device/cid | User‑space recovery of device info |
150100303136473332e03f5d9600b46d
eMMC CID Decoder: A Technical Overview Card Identification (CID)
# Byte 9: Product Revision (PRV) - BCD prv = raw_bytes[9] major_rev = (prv >> 4) & 0x0F minor_rev = prv & 0x0F
You cannot decode what you cannot read. Extracting the CID requires either software access (if the device is booted) or hardware access (if the device is dead or locked).
Indicates whether the device is a BGA (Ball Grid Array) or another package type.