Re: minicom returning invalid AT ... command

pHilipp Zabel wrote:
> On 10/16/07, Brian Green <brian.green_at_bdgreen.net> wrote:
>> Hi Philipp
>>
>> pHilipp Zabel wrote:
>>> On 10/16/07, Brian Green <brian.green_at_bdgreen.info> wrote:
>>>> Hi
>>>>
>>>> I'm trying to re-installed Mobile 5.0 to my hx4700.
>>>>
>>>> Currently the hx4700 has the SDG Systems (1.2.4.hx4700) bootloader in
>>>> ROM, with GPE 2.7 Linux 2.6.16.hh2 - Familiar v 0.8.4.
>>>>
>>>> I believe I still have the original image created by dd back in 2006
>>>> which I have just restored, using dd, to a freshly formatted 1GB SD.
>>>>
>>>> When I try to execute s2d, minicom gives:
>>>>
>>>> "
>>>> Welcome to minicom 2.2
>>>>
>>>> OPTIONS: I18n
>>>> Compiled on Nov 26 2006, 03:37:56.
>>>> Port /dev/ttyUSB0
>>>>
>>>> Press CTRL-A Z for help on special keys
>>>>
>>>> Invalid command : AT V1 X4 &c1 E1 Q0
>>> That's ok. "AT V1 X4 &c1 E1 Q0" is what minicom sends to initialize
>>> the modem on the other end (see minicom -s -> modem & dialing -> init
>>> string), and the htc bootloader obviously doesn't understand AT
>>> commands.
>>>
>>>> For a help screen, use command ? or h
>>>> USB>
>>>> "
>>>>
>>>> Entering the command s2d gives:
>>>>
>>>> "
>>>> Invalid command : s2d
>>>> For a help screen, use command ? or h
>>>> "
>>> And that's ok, too, because in the bootloader version shipped with the
>>> hx4700, the s2d command is not implemented. The only way to put that
>>> image back into flash is to put the SD card in and have the bootloader
>>> recognize it automatically on startup (it says 'press power to flash'
>>> or similar if the checksums are correct).
>>> Or maybe soon with my small USB flashing tool
>>> (http://www.linuxtogo.org/~ph5/htc-tools/), if somebody supplies the
>>> hx4700 wince partition list for htc-flash.c and isn't afraid to test.
>>> Patches welcome :)
>>>
>> OK. I started the SDG bootloader with Contacts, Inbox, and Reset.
>>
>> I get the SDG Systems Embedded Reflash Utility screen. Then "Can't read
>> control file". Which is repeated when I press Record.
>>
>> So, the checksum is wrong?
>
> No no, if you want to flash an SD image that was created with d2s by
> the _HTC_ bootloader, you also have to use the HTC bootloader to write
> it back. Plug in the SD card, start the HTC loader with
> <Contacts>+<iTask>+<Reset>, and if you are lucky and everything went
> right during backup and restoration of the SD card image, it should be
> recognized at this point.
>
> regards
> Philipp

But, "<Contacts>+<iTask>+<Reset>" merely presents me with the Serial HP
v1.01 screen, and then the iPAQ hangs ...

(This is the sequence by which I got to the USB prompt, above ...)

Cheers

Brian
Received on Wed Oct 17 2007 - 03:43:19 EDT