"partitioning not detected" when dumping emmc

[ttpower]

I'm trying to recover data from an emmc desoldered from a Wiko phone (android).

here the log:

Z3X EasyJtag Software ver. 2.0.7.6
Loading eMMC Addon Firmware... IO: 2800 mV
Box S/N: 0700F002DA19E094, ,FW Ver.: 01.52
CMD Pullup Level:1732 mV
CMD Active Level:1804 mV
HiPower™ mode is off!
eMMC Device Information
EMMC CID : 90014A4841473464040503A26D40A1F4
EMMC CSD : D02701320F5903FFFFFFFFEF8A4040D2
EMMC Manufacturer ID: 0090 , OEM ID: 014A
EMMC Date: 10/2014 Rev.0x5
EMMC NAME: HAG4d , S/N: 60976448
EMMC NAME (HEX): 48414734642000
EMMC ROM1 (Main User Data) Capacity: 15032 MB
EMMC ROM2 (Boot Partition 1) Capacity: 4096 kB
EMMC ROM3 (Boot Partition 2) Capacity: 4096 kB
EMMC RPMB (Replay Protected Memory Block) Capacity: 4096 kB
EMMC Permanent Write Protection: No
EMMC Temporary Write Protection: No
Extended CSD rev 1.6 (MMC 4.5)
Boot configuration [PARTITION_CONFIG: 0x48] Boot from:ROM2 (Boot Partition 1)
Boot bus config [177]: 0x00 , width 1bit , Partition config [179]: 0x48.
H/W reset function [RST_N_FUNCTION]: 0x01
Backup saved: HAG4d _ 60976448_20160321_1831.extcsd
Searching for partition tables...
Partitioning not detected...
Done.

Z3X EasyJtag Software ver. 2.0.7.6
Skip loading eMMC Addon Firmware
CMD Pullup Level:1732 mV
CMD Active Level:1804 mV
Reading 0x000100000000 bytes from 0x000000000000 ...ROM1 ( USER ROM)
Output file :G:\EMMC_ROM1_HAG4d _ 60976448_00000000_100000000.bin

After a few hours,I have a 4 GB file but diskinternals gives an error. Any hint?

[ttpower]

addictional information: emmc is from SKhynix