GPS Navigators, Pinouts, Dumps, Connection, Tips

[haute]

Originally Posted by flierace

Good day! With great interest I read this topic, because I'm trying to find a solution to the issue of restoring garmin astro 320. I replaced it with emmc and sta2065, but the navigator does not turn on and does not load into the pre-boot. Did you find the chip in which the boot firmware is stored? Thanks for the reply, colleague!

Hi, i think the structure of emmc is:
Astro 320 Hwid:1339
Regions Found: 10
Region Offset Size
------ ------ ----
(0x2b) 43, 0x00000000, 0x00010000 X-Loader
(0x05) 5, 0x00010000, 0x00040000 U-Boot
(0x10) 16, 0x00050000, 0x00100000 Logo
(0x22) 34, 0x00150000, 0x00020000
(0x29) 41, 0x00170000, 0x00440000 NV (non-vol memory region)
(0x5b) 91, 0x005b0000, 0x000c0000
(0x2d) 45, 0x00670000, 0x00020000
(0x0e) 14, 0x00690000, 0x00900000 Firmware
(0x53) 83, 0x02300000, 0x00000000 Filesystem (Fat32)
(0x30) 48, 0x02300000, 0x00000000 Filesystem (Fat32) Virtual?

The most important regions are the first two and the NV.
If these regions are corrupt you can not turn on the GPS, nor update it.

Make a backup of the emmc memory and maybe I can confirm this.
Some gps models have the important regions in a Nand memory and the filesystem in the emmc, but they are few cases, such as the Etrex20 / 30.
You can also post a photo of the pcb board and so we can see if there is any memory nand or just emmc.
If it is the case that only one emmc takes, the problem could be that emmc is damaged, but you could replace it with another equal or larger, with a backup of another that works (same gps model).

Unfortunately the creators of easyjtag do not give much support to Garmin GPS, it's a shame, because there is a lot of information to do it.
A greeting.

[haute]

These are the emmc regions of the Garmin Nuvi 2x5W, it is the model known emmc pins, in the easy-jtag database.

Nuvi2x5W Hwid:827/851/932
Regions Found: 11
Region Offset Size
------ ------ ----
(0x2b) 43, 0x00000000, 0x00020000 X-Loader
(0x05) 5, 0x00020000, 0x00040000 U-Boot
(0x10) 16, 0x00060000, 0x00080000 Logo
(0x22) 34, 0x000e0000, 0x00020000
(0x29) 41, 0x00100000, 0x00400000 NV (non-vol memory region)
(0x2d) 45, 0x00500000, 0x00020000
(0x0e) 14, 0x00520000, 0x00880000 Firmware
(0x56) 86, 0x00da0000, 0x00080000
(0x5b) 91, 0x00e20000, 0x00080000
(0x0f) 15, 0x00ea0000, 0x00560000
(0x30) 48, 0x01400000, 0x00000000 Filesystem (Fat32)

[nicnec]

TomTom VIA Pinout ISP
Setting interface to EasyJtag2/ISP
Setting bus width to 4 Bit
Setting frequence to 24 Mhz
CMD Pullup Level: 2808 mV
CMD Active Level: 2795 mV
EMMC Device Information :
EMMC CID: 1501004D344731454D109103989F6E6D
EMMC CSD: 902601320F5903FFFFFF9FFF964040D1
EMMC Manufacture : SAMSUNG , EMMC NAME: M4G1EM , HEX: 4D344731454D , S/N: 9103989F , rev. 0x10
EMMC Manufacture ID: 0x15 , OEM ID: 0x00 , Device Type: BGA (Discrete embedded) , Date: 6/2011
EMMC ROM 1 (Main User Data) Capacity: 3816 MB (0000EE800000)
EMMC ROM 2/3 (Boot Partition 1/2) Capacity: 0 KB (000000000000)
EMMC RPMB (Replay Protected Memory Block) Capacity: 0 KB (000000000000)
EMMC Permanent Write Protection: No
EMMC Temporary Write Protection: No
Extended CSD Information :
Extended CSD rev: 1.3 (MMC 4.3)
Boot configuration [PARTITION_CONFIG]: 0x00 , Boot from: no boot
Boot Bus Config: 0x00 , width 1bit
H/W Reset Function [RST_N_FUNCTION]: 0x00, RST_n signal is temporarily disabled
Supported partition features [PARTITIONING_SUPPORT]: 0x00
Partition Settings [PARTITION_SETTING_COMPLETED]: 0x00
Backup saved: M4G1EM_9103989F_20190224_093906.extcsd
EMMC Init completed.

Warning: BusWidth is automatically set to 1 Bit

Get firmware version
GPT header is not found

[layder]

Originally Posted by nicnec

TomTom VIA Pinout ISP

Get firmware version
GPT header is not found

you can try to read partition info via "read by vendor - qualcomm"

[tattoum]

Hi all, i am interested in gps.
i have a garmin GPS 72 which is dead. is there any dump for it? how can i read its dump using jtag?
this is its board :
Nouveau document 2019-02-24 14.39.39_2.jpg

Nouveau document 2019-02-24 14.39.39_1.jpg

[nicnec]

Originally Posted by layder

you can try to read partition info via "read by vendor - qualcomm"

You have TomTom Backup here on the partition and the compiled files. I can do more tests if it helps with unlocking.
https://mega.nz/fm/BPpAGSzJ

[nicnec]

New https://mega.nz/#!1PhhVaDQ!YTw8JD6nU...EmW76SPLIpMw-U

[marky1991]

WOW nice nicnec, hpw do you find the test points¿

Regards

[ashokmadivala]

need samsung j200h dump.... i try in support but not downloading... please provide

[chemik007]

Does anyone have a memory dump from tomtom start 20 navigation?

[lolville]

Originally Posted by chemik007

Does anyone have a memory dump from tomtom start 20 navigation?

Any luck yet? My start20 is stuck on standby and cannot be recovered by using their recovery method.