Carprog Mcu Reflash Step by step

[Estebanpuri]

Hi ! I have one carprog online, but not work the vag key, always says "signal to low" before says "not signal of antena" if someone can help me!
I try another antena (VAG one), not work. others 4D 4C read well. but not in "vag nec key"

[Marios80]

Anyone in the US that would want to reflash tow or three carprogs for me?

[Smart66]

After soldering a new AT91SAM7S256-AU as far as I know its ERASING isn't necessary, but should I solder 55 pin to GND?

[Bido10]

I made a modification to my Carprog clone for fast reprogramming, if I need to do it again will not be necessary to open it again and redo all connection every time I want or need to reprogram:



I used the Carprog pins from 15 to 21, those pins are useless for the programmer or any adapter, they are disconnected:



I used a "selector" like the desktop's pc for bios, to select the programming mode, in picture from left to right: 1, 2 3, if the jumper is placed at pins 1 and 2, the pin 55 (reset) from the AT91 is shorted to ground, preventing deprogramming or programming the MCU, if the jumper is placed at pins 2 and 3 the pin 55 is shorted to vcc 3.3v and the Mcu is placed in ERASE MODE. Without jumper the mcu is placed in programming mode:





Now is probably a waste of time, in the near future will save me some time but from now I can reflash the AT91 in less than 5 minutes.

Update: I forgot to mention that I doesn't need to remove the AT88SC eeprom to ERASE/REFLASH the AT91 mcu. After that the Carprog works well. This is MY OWN experience, so, If you want to do the same, do it at YOUR OWN risk.

Could you send me the carprog conversion scheme?
well thank you
Email:xxxxxxxxxxxx

[Bido10]

Can I ask you for a diagram or instructions for remaking carprog?
Well thank you

[Nostalgic85]

I made a modification to my Carprog clone for fast reprogramming, if I need to do it again will not be necessary to open it again and redo all connection every time I want or need to reprogram:



I used the Carprog pins from 15 to 21, those pins are useless for the programmer or any adapter, they are disconnected:



I used a "selector" like the desktop's pc for bios, to select the programming mode, in picture from left to right: 1, 2 3, if the jumper is placed at pins 1 and 2, the pin 55 (reset) from the AT91 is shorted to ground, preventing deprogramming or programming the MCU, if the jumper is placed at pins 2 and 3 the pin 55 is shorted to vcc 3.3v and the Mcu is placed in ERASE MODE. Without jumper the mcu is placed in programming mode:





Now is probably a waste of time, in the near future will save me some time but from now I can reflash the AT91 in less than 5 minutes.

Update: I forgot to mention that I doesn't need to remove the AT88SC eeprom to ERASE/REFLASH the AT91 mcu. After that the Carprog works well. This is MY OWN experience, so, If you want to do the same, do it at YOUR OWN risk.

Hello crack... would you be so kind as to tell me where to solder the cables to do an easy reset like you did... I hope it's not too much to ask... thank you