J500m... Riff, all fine.

[mtk6572s4clone]

.........................

Open serial port...OK
Connecting to the RIFF Box...OK
Firmware Version: 1.51 (RIFFBOX2), JTAG Manager Version: 1.81
Selected Manual Mode: [eMMC/SD & GPIO, 51 MHz, 1 Bit Bus Width (DAT0), 1.80V]

Connecting to the SD/eMMC Card...OK
Set I/O Voltage reads as 1.79V, SD_CLK Frequency is 51 MHz

Memory Type .......................... eMMC
Manufacturer ID ...................... 0x15
OEM/Application ID ................... 0x00
Product Name ......................... "Q316BB"
Package .............................. BGA
User Area Partition Size ............. 0x0003AB400000 Bytes (14.68 GB)
Boot Partition Size .................. 0x000000400000 Bytes (4.00 MB)
RPMB Partition Size .................. 0x000000400000 Bytes (4.00 MB)
OCR Register ......................... 0xC0FF8080 (Dual Voltage, High Capacity)
Write Protection Bits ................ NONE
ExtCSD Register Fields ............... [177] = 0x00, [179] = 0x00, [162] = 0x01
Boot Configuration ................... No Boot
Chip Revision ........................ 0.0
Multimedia Card Revision ............. 1.7 (eMMC v5.0)
Serial Number ........................ 0xD933F032
Memory Manufacturing Date ............ February, 2017