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Old 02-04-2017, 14:27   #28 (permalink)
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Originally Posted by haute View Post
Garmin etrex 30, it have a emmc 2gb.
It detect and read 1908Mb (but only filesystem region), but it is no de start of the emmc.
the start of emmc is 0x00000000 to 0x02000000
The filesystem start at 0x02000000 to end of emmc.
what is the problem?

Z3X EasyJtag Software ver.

Loading eMMC Addon Firmware... IO: 1800 mV
Box S/N: 0D0010228807B87F, ,FW Ver.: 01.58
CMD Pullup Level:1588 mV
CMD Active Level:1753 mV
Box IO Level:1800 mV
CLK Rate:21000 khz
HiPower mode is off!
---------- eMMC Device Information ----------

EMMC CID : 1501004D3247314445101317AABB4F50
EMMC CSD : 900F00320F5A03B9FFFF8FFF96404010
EMMC Manufacturer ID: 0015 , OEM ID: 0100
EMMC Date: 04/2012 Rev.0x10
EMMC NAME: M2G1DE , S/N: 320318139
EMMC NAME (HEX): 4D324731444500
EMMC ROM1 (Main User Data) Capacity: 1908 MB
EMMC ROM2 (Boot Partition 1) Capacity: 0 kB
EMMC ROM3 (Boot Partition 2) Capacity: 0 kB
EMMC RPMB (Replay Protected Memory Block) Capacity: 0 kB
EMMC Permanent Write Protection: No
EMMC Temporary Write Protection: No
EMMC Password Locked: No
Extended CSD rev 1.3 (MMC 4.3)
Boot configuration [PARTITION_CONFIG: 0x00] No boot partition configured.
Boot bus config [177]: 0x00 , width 1bit , Partition config [179]: 0x00.
H/W reset function [RST_N_FUNCTION]: 0x00
High-capacity W protect group size [HC_WP_GRP_SIZE: 0x00000000]
Partitioning Support [PARTITIONING_SUPPORT]: 0x00
Device NOT support partitioning feature
Device cannot have enhanced tech.
Partitioning Setting [PARTITION_SETTING_COMPLETED]: 0x00
Backup saved: M2G1DE_ 320318139_20170201_1844.extcsd

Z3X EasyJtag Software ver.
Skip loading eMMC Addon Firmware
CMD Pullup Level:1588 mV
CMD Active Level:1753 mV
Box IO Level:1800 mV
CLK Rate:21000 khz
Reading 0x000080000000 bytes from 0x000000000000 ...ROM1 ( USER ROM)
Read Length has been corrected to 0x000077400000 bytes...
Output file :\Garmin\RAW\etrex20-30\ n
Done. Read Speed: 968 kB/s

It seems that the reading is correct and emmc memory is only the region filesystem.
The other regions (x-loader, booot etc.) are in another type of memory
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