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Old 07-15-2013, 10:54   #1 (permalink)
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GPS Navigators, Pinouts, Dumps, Connection, Tips


Here will be discussion about GPS navigators dumps, connection, pinouts,

At this moment GPS navigators READ/WRITE supported via DIRECT EMMC connection.

In theory supported all navigators based on EMMC.

Lets start this Hope EASY-JTAG will help repair unbrick lot ot GPS devices.

Last edited by blang; 07-15-2013 at 19:10.
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Old 07-15-2013, 11:39   #2 (permalink)
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what about to remove pin code in garmin navigation?
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Old 07-15-2013, 11:51   #3 (permalink)
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Quote:
Originally Posted by hans salim View Post
what about to remove pin code in garmin navigation?
if this garmin emmc based - you can read/write full or part of dump. i think all pins and other information there.
if cloning possible you can write full dump from working one.
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Old 07-15-2013, 13:45   #4 (permalink)
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wt about tom tom . pin code
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Old 07-15-2013, 14:05   #5 (permalink)
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Quote:
Originally Posted by CHAUDHRAY ARSHAD View Post
wt about tom tom . pin code
if this tom tom emmc based - you can read/write full or part of dump. i think all pins and other information there.
if cloning possible you can write full dump from working one.
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Old 07-16-2013, 20:41   #6 (permalink)
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Hello, you are creating a way eMMC finder, like jtag finder?, To find the points CMD, DAT0-to 4, CLK, 1.8 v and 2.8 v?
Where you can find some example information pinouts on Garmin GPSs?
Most I know Garmin GPS: Nuvi, outdoor, edge and forerunner use eMMC.
Greetings ..
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Old 07-22-2013, 00:07   #7 (permalink)
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Quote:
Originally Posted by haute View Post
Hello, you are creating a way eMMC finder, like jtag finder?, To find the points CMD, DAT0-to 4, CLK, 1.8 v and 2.8 v?
Where you can find some example information pinouts on Garmin GPSs?
Most I know Garmin GPS: Nuvi, outdoor, edge and forerunner use eMMC.
Greetings ..
Best eMMC pinout finder already invented ;-)

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Old 07-22-2013, 08:44   #8 (permalink)
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Quote:
Originally Posted by haute View Post
Hello, you are creating a way eMMC finder, like jtag finder?, To find the points CMD, DAT0-to 4, CLK, 1.8 v and 2.8 v?
Where you can find some example information pinouts on Garmin GPSs?
Most I know Garmin GPS: Nuvi, outdoor, edge and forerunner use eMMC.
Greetings ..
100% way to find emmc direct connect poinout - you can remove EMMC and check pins via tester.

we have emmc direct pinout for 2 navigators 1 mio and 1 garmin. soon will be uploaded to support.
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Old 07-22-2013, 19:19   #9 (permalink)
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Not everyone has an oscilloscope at home to find the points.
But I think they'd be grateful if you put a small tutorial on how to find the points with an oscilloscope eMMC simple.
There are some cheap oscilloscopes, via USB.

On the other hand, I think I have spotted a standard JTAG port all garmin models.
I want to buy the box and check it.
I saw on the specifications of the box, it is possible to make debugger, reading registers, and put breakpoints.
I have not seen any post regarding these features.


A greeting.
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Old 07-27-2013, 13:53   #10 (permalink)
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Garmin C330

Any chance of JTAG on a Nand memory GPS?

I picked up a Garmin C330 for very cheap just so I can start playing with GPS JTAG/ repair... I know it is not Emmc but is there a way we can still use JTAG to read/write ?

The GPS is stuck on boot logo after the original owner tried flashing new maps. I tried Hard reset ..does not work.

Nand memory used is here:
K9W8G08U1M datasheet, Pinout ,application circuits 512m X 8 Bit / 256m X 16 Bit Nand Flash Memory Semiconductor

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Old 07-27-2013, 19:40   #11 (permalink)
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spagman, you can put the detailed photos of the two sides of the PCB?
Maybe, I can help to find jtag port.

A greeting.
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Old 07-27-2013, 19:55   #12 (permalink)
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Here is the other side....I think the pinout is in the first picture though... I don't see anything interesting in this one.

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Old 07-27-2013, 22:07   #13 (permalink)
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Hello, in the top right of the MicroSD card slot, there are 8-pin row.
1 -
2 - Tms
3 -
4 - Tdi
5 - Gnd
6 -
7 -
8 - Tck

I think the order of the pins is the show.
I think it is a standard JTAG connector on garmin gps.
Jtag_finder Mode Testing and coments us the results.

Another option, is to be the connector on the top left of the PCB.
An 8-pin connector. Check if pin 5 is Gnd.

A greeting.

Last edited by haute; 07-27-2013 at 22:15.
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Old 07-27-2013, 23:15   #14 (permalink)
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Quote:
Originally Posted by haute View Post
Hello, in the top right of the MicroSD card slot, there are 8-pin row.
1 -
2 - Tms
3 -
4 - Tdi
5 - Gnd
6 -
7 -
8 - Tck

I think the order of the pins is the show.
I think it is a standard JTAG connector on garmin gps.
Jtag_finder Mode Testing and coments us the results.

Another option, is to be the connector on the top left of the PCB.
An 8-pin connector. Check if pin 5 is Gnd.

A greeting.
is there any info for jtag connection of this device ? init ? architecture ?
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Old 07-27-2013, 23:58   #15 (permalink)
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No information at all that I can find online. Only ship replacement parts.
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