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Really thank you guys, My GSM V2 finally worked.
As Dave mentioned, My problems is solved by instead of my psu(1000mA) by using a DC power generator with a larger current than 1000mA, like following .

THANK you~ Dave and Benj
Julian

one thing to supplement: no matter it work or not, the GSM board need initialize more than three times in initialization loop, and SIMVCC is up and down more than three times between ~2.8V and ~0V. if succeed, SIMVCC keeping at 2.8V after initialization, then every thing can work fine. if not, SIMVC...

Hi Benj, feel sorry for having questions every day. I still wonder there is something wrong with my EB066-00-2, which really bothering me recently (I have tried the methods you mentioned before). Acturally, this EB066-00-2 was worked in today and yesterday afternoon (Beijing Time Zone), but just wor...

Hi Benj
I think I have the same problem with reset, I would be very glad if you can tell me how to fix it in detail. and where I can get your updated example?
THANKS

Thank you very much Benj, I am not sure how to "instead of leaving the reset pin floating after pulling it low you should pull it high", and is it modified in program or to change any jumper in board? Also, I still wonder if my DC power supply (7.5~9V & 1000mA) is appropriate to whole ...

Hi Benj, we are testing GSM_V2( EB066 V2) with multi-programmer ( EB006_v9). With regard to the power supply of EB066 V2, we would like to hope that you can help to clarify the following issues: 1) Connect a wire from the 14V screw terminal of the Multi-programmer to +VPWR terminal of GSM board. a) ...

Dear Benj thanks a lot and sorry for reply so late, and may interrupt your holiday. now Flowcode v5 can compile and transfer GSM_Test2.fcf to chip with no question, but the LCD keep display just like following figure. (After display 'starting' string) http://ww1.sinaimg.cn/large/005yyi5Jjw1ensv6gvkd...

Dear Benj I am sorry. I think the GSM_Test2.fcf you send to me does not solve my problem. If I use Flowcode V5 to compile and transfer it to chip, result shows that: %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % program memory check failed % % (NOTE: if the PIC is code-protected, this message w...

Dear friends~ I got a EB066 GSM block yesterday, and plug to my pervious EB006 with 16F1937 on board multiprogrammer. I followed the factory test routine to connect them, not transfer the GSM.hex to EB006, but transfer the phone_04.fcf by Flowcode-V5 to EB006. However, the GSM block seems dose not w...