Firmware update not working - help please - I'm new!
Moderators: JeffC, rdoherty, stieg, brentp
Hmm- I'm a bit at a loss. your chip was programmed with the bootloader that's installed on it already, so it should, in theory, work.
Double check the polarity of all of the tantalum capacitors- or try a different set. With the extra caps installed you should have plenty of margin in the circuit.
Let us know if you're still stuck!
Sorry about your block!! I'm diagnosing a weird sound in my turbo 4AG engine as well, I'm fearing a major teardown.
Regards,
Double check the polarity of all of the tantalum capacitors- or try a different set. With the extra caps installed you should have plenty of margin in the circuit.
Let us know if you're still stuck!
Sorry about your block!! I'm diagnosing a weird sound in my turbo 4AG engine as well, I'm fearing a major teardown.
Regards,
Brent,
I've tried another set of caps, triple-checking the polarity with the datasheet - no change.
Martin M has offered to take a look at the board for me and try to find what's wrong, so I
think I'm going to have to go this route.
I hope it's not me doing something stupid!
I'm mechanical rather than electronic, so at least the core plug's sorted!
Thanks for your efforts.
Jon.
I've tried another set of caps, triple-checking the polarity with the datasheet - no change.
Martin M has offered to take a look at the board for me and try to find what's wrong, so I
think I'm going to have to go this route.
I hope it's not me doing something stupid!
I'm mechanical rather than electronic, so at least the core plug's sorted!
Thanks for your efforts.
Jon.
Brent - I emailed you yesterday about having exactly the same issue again (as in Jan 07) after upgrading the capacitorss C3 to C6 and C10 to 1 mfd tantalums - just seen this series of posts - I asked whether the Max 232 could be at fault - from these replies it looks like it could be - mine was also a fully assembled board - again around mid 06!!
Regards
Steve
Regards
Steve
Steve,
Just emailed you. So back in January you patched in the 1uF capacitors and you successfully upgraded to the then 3.1.0 beta firmware- I wonder what's different now? Did you need to try very many times back then to get it to work? Also, once you programmed it successfully, did you try programming it again to see how reliably it operated?
Thanks,
Just emailed you. So back in January you patched in the 1uF capacitors and you successfully upgraded to the then 3.1.0 beta firmware- I wonder what's different now? Did you need to try very many times back then to get it to work? Also, once you programmed it successfully, did you try programming it again to see how reliably it operated?
Thanks,
-
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- Joined: Tue Jan 10, 2006 8:17 pm
- Location: North Yorkshire, UK
I had EXACTLY the same problem last week. I was using an old laptop with proper serial port... tried 3 computers all with proper serials and always get the exact same thing. "cannot read MCU forgot to set single wire mode?" or words to that effect.
Now... heres what I did to fix it.
Power up the MJLJ BEFORE running HC08SPRG.exe. NOW, I know this goes against all instructions but bear with me.
When it comes up with awaiting the reset, power down the MJLJ and then power it up again... it worked straight away for me, BUT it doesn't work with USB to serial as I tried that too.
Incidentally, i am using a MAX232 with the 0.1uF charge pump caps. I will be changing these next time the unit is out of the car. I have no trouble communicating using any tuning software, just when doing the firmware upgrade... hopefully I won't need to do that too often.
Now... heres what I did to fix it.
Power up the MJLJ BEFORE running HC08SPRG.exe. NOW, I know this goes against all instructions but bear with me.
When it comes up with awaiting the reset, power down the MJLJ and then power it up again... it worked straight away for me, BUT it doesn't work with USB to serial as I tried that too.
Incidentally, i am using a MAX232 with the 0.1uF charge pump caps. I will be changing these next time the unit is out of the car. I have no trouble communicating using any tuning software, just when doing the firmware upgrade... hopefully I won't need to do that too often.
Tired that & it doesn;t work either ; Looks Like I'll need to change the Max 232capri_turbo wrote:
Power up the MJLJ BEFORE running HC08SPRG.exe. NOW, I know this goes against all instructions but bear with me.
When it comes up with awaiting the reset, power down the MJLJ and then power it up again... it worked straight away for me, BUT it doesn't work with USB to serial as I tried that too.