Possible to downgrade firmware?

[Mr.Micro]

So, this is an invalid init string:

ate0q0v0&c1x1&k0&s1*b0
s0=1 s2=43

The problem here is that you have *b0 which tries to set the baud rate to 0 (invalid), and I think that the next line is going to be ignored?  I will look into this some more to see what the WiModem is actually doing.  The v0x1 disables the verbose and text modes so you get response codes as numbers instead of English text.

Update -

Ok, this is definitely going to return an error (numerical) and that probably skips the next line that enables the auto answer (that is what S0=1 does).  If that's suppose to be one long init string (and not two), then it definitely is the cause of your problem because as soon as any command that is parsed in the string generates an error it exits the parse and does not continue to process the remainder of the string.  That is the official "hayes" way of handling the strings.

I would recommend using this string:

ate0q0v0&c1x1&k0&s1s0=1s2=43

However, there does seem to be a problem with the WiModem doing the auto-answer (S0= anything but 0).  ATA works perfectly, but not the auto-answering.  I am looking into it.  You will need to fix your init string though.

I'm sorry, that b0 is for the WiFly modem which is being used as baud detection. IT IS NOT in the string on the WiModem. if you look at the pic I attached in the other post showing AT&V, you can clearly see baud is set at 2400. So much information passing around, that was an error on my part.

I also just put those S registers on a separate line to make it clearer. Again, I defer you to the pic of my AT&V (reattached here).

I've been using that same string for 4yrs with no problems on all my modems, including yours.