We’ve 404 pcs Q2501b modules. One of them came with a development board and it’s used it in our development process and now we’re trying to use rest of them for mass production but there is a problem within the gps:
this is our “development module” :
at+whwv Hardware Version 3.13 at+wdop Production Date (W/Y): 43/2005
at+wgpsm=3 (ENTER) +WGPSM: SW VERSION 3.0 Feb 11 2004 13:59:43 - HW VERSION 00000040 OK
at+wgpspos (ENTER) +WGPSPOS: 2,165441.00,201006,xxxx.0xxxN,xxx6.xxxxxE,xxx.3,2.14,0.xxx,2.33,8
( it works fine)
but with the modules that we plan to use for mass production:
at+wgpsm=3 (ENTER) +WGPSM: SW VERSION not defined - HW VERSION not defined OK
at+wgpspos (ENTER) +WGPSPOS: -1,,,,,,,,,0 "It is not possible to define a position"
( actually we can read GPS coords from auxilary serial port but can not read the coords over GSM link)
Any idea about what is wrong with our Q2501bs ? Do we need a firmware upgrade?