How to JTAG a DM500

[roulitsas]

Morning guys...

Can anyone help me on how to use the Jtag without soldering the cables on the PCB? I have to fix about 10 boxes, so that would be hard to do so..

Thank you..

<--roulitsas added 68 Minutes and 51 Seconds later...-->

dear friends, my dm500s just went blank 2 days ago, when i powered it up nothing shows on the tv screen, no response from remote,
only the green power LED on dm500s front panel is ON now.
( i was using the older version of gemini, not the virus version)

so i thought a simple dreamup re-flash via serial would solve it, i was wrong!!!
dreamup does not load anything, it just shows waiting for acknowledge..
and hangs there forever.

i even tried hyperterminal and this is all i got.




so i tried omars method by removing the front panel cable and shorted the pins using a pin jumper ...



and after i shorted the pins i was able to get this on hyperterminal




and i managed to successfully flash working image using dreamup,

now here is the problem, after successfully flashing the image
i removed the jumper pin and slotted back the front panel cable into it
and hooked to my tv, but nothing shows on tv.

so what i did, i again removed the front panel cable and slotted the jumper pin
back and hooked dm500 to my tv, and only then it worked and gemini project screen appeared on my tv screen, and i managed to see all my satellite signals were detected (but my ethernet port does not work!!) i have lights on my dm500s ethernet port and also the lights were on my 4 port switch. but the ethernet port does not detect dhcp ip and does not reply to
manual input ip!!

it looks like my dm500s will not boot or show anything on tv screen without me leaving the jumper pin there permanently!

please do i have to jtag it now??
appreciate all your advices here in this fantastic forum..

cheers and have a nice day.

Today i am going to try to JTAG my DM500 (clone) and i have read the whole thread and found out that shahjees is giving very good instructions on how to repair the box without the use of JTAG. Has anyone really tried this before? Is it really working? If so, is it true about the box not operating without the jumper??? And finally the BIG question...

How the hell is it possible for the box to boot-up and allow you to flash with a new image if there is NO booloader inside. Gemini (not exactly Gemini but the libraries of the CVS) is supposed to wipe the bootloader and as far as i know, the images do not contain any bootloaders.. So????

I think i will give it a try this evening and post a feedback in here...

[DonTon]

folks,

maybe some can give me a hint...

have rescued recently my DM500C with NXT tuner

I keep testing Gemini 4.4 with different MAC addresses 00:09:34... on my box, but everytime the clone bomb checker tells me "Potential risk clone bomb..." I did also use my neighbour MAC address, without luck

Does any1 has an idea how to work around this, if at all? I know, do not use Gemini, but at the moment I am dependet on it...

Thanks

[micromouse]

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[dedea]

Today i am going to try to JTAG my DM500 (clone) and i have read the whole thread and found out that shahjees is giving very good instructions on how to repair the box without the use of JTAG. Has anyone really tried this before? Is it really working? If so, is it true about the box not operating without the jumper??? And finally the BIG question...

How the hell is it possible for the box to boot-up and allow you to flash with a new image if there is NO booloader inside. Gemini (not exactly Gemini but the libraries of the CVS) is supposed to wipe the bootloader and as far as i know, the images do not contain any bootloaders.. So????

I think i will give it a try this evening and post a feedback in here...

Did you menage to work with front panel cable or still work just with jumper.
I have same problem like you and I made to jtag box but receiver still work just with jumper and not with front panel cable.
I think there is power problem.

regards