Jtag repair Dreambox

**satsmo** · 10th July, 2009, 02:31 PM

This is not just a download site. If you do not wish to contribute here then please do not ask members for that amount of help. I am sure it is already here if you take a look around.

Given your last comment yes you are correct writing stupid things can be a pain.

**MetalKettle** · 10th July, 2009, 02:32 PM

Originally Posted by satsmo

This is not just a download site. If you do not wish to contribute here then please do not ask members for that amount of help. I am sure it is already here if you take a look around.

Given your last comment yes you are correct writing stupid things can be a pain.

.

**cool_Boi** · 22nd July, 2009, 11:24 PM

thx. hope it works

**yozeno** · 23rd July, 2009, 08:41 PM

Thanks! It really helped me!

**Felix4711** · 25th July, 2009, 02:56 AM

I have also a Clone and the same probs with the bootloader.

**khalakov** · 11th August, 2009, 12:41 PM

Hi m8,
Anyone can help me how to Jtag DB 7000 Using Cas3 programmer.

**godady** · 11th August, 2009, 01:54 PM

hi my friends, every one can help me for my dream 500s, in the scerm log is "............ adios amigo" now is offff, can you help me how to do working again my dream with Cas 3+. Thank You

**nonpass** · 28th August, 2009, 10:15 AM

good work very thank

Originally Posted by alunfennell

The connections are:

Picture 1 referance....

LPT--------------> Dreambox/Clone

2 --> 100 ohms --> 11 ( Halt)

3 --> 100 ohms --> 9 ( Tms )

4 --> 100 ohms --> 7 ( Tck )

5 --> 100 ohms --> 3 ( Tdi )

11 --> 100 ohms --> 1 ( Tdo )

25 ------------------ 16 ( Ground)

Picture 2 referance.........

Th pins 18, 19, 20, 21, 22, 23, 24 e 25 of the port LPT must be shunted between themselves, like commercial jtags has.

Now, The cience of the thing is doing the connect and turn on the box at the same time.

With the tests done I've understood better how it works great:

The secret is in 1? do connect to the program and then turn on the clone, but with a certain delay. This delay depends on the speed of your CPU, the faster CPU's, minor the time/delay (between 0 e 1 seconds).

Change the priority of the program jtag_windows.exe on the task manager for the real time which must turn more real the delay itself, once the program will give maximum priority of the use of the CPU.

About the timming, if it shows you only "ERROR:register test failded" then the jtag is ok, but you have turned on the box sooner then expected, if it shows you the 4 times "ERROR: communication with LPT/JTAG", then you must turn on the box sooner, or the jtag isn't ok.

Remmember that you must connect the box always after making connect on the program.

After you must warp/straight the pins on the adaptor switch of the box, so it fits faster on the electric switch.

By end, you must use an electric switch easy to fit, I have used one triple (from the bad ones), but I had to dismount it and press their electric pins to don't make bad contact.

When doing "write" the program sends immediately the boot, that is the file "blimg".

The file present in this attachment is the boot of a DM500 and tunner ALPS of CRC-32 9055B110, once again thanks Matrix10, because I've tested a boot that were supposed to be for the DM500 and ALPS and it didn't worked, and this one in the attachment is guaranteed it works.

after sending the boot of 128KB by Jtag, you can turn on the box with dreamup and by rs232 send an image

**audi0galaxy** · 28th August, 2009, 03:19 PM

ok thanks ery much

**innerman70** · 3rd September, 2009, 11:46 PM

Need some help I was soldering the wire on no. 9 pin on dm 500c board (TMS) and the contact came off the board could some one inform me how i could get that contact fix so i will be able to jtag dm 500 c