SMS sending issue EC200AEU

Please can you send me the firmware for my module, i have issues sending sms.

EC200A
Revision: EC200AEUHAR01A30M16
AT+QGMR
EC200AEUHAR01A30M16_01.300.01.300
AT+CGSN
867934083404071

which tool to use for firmware upload?

Hi there,
May i confirm are you looking for the tools or the FW package itself?

I need stable firmware because of sms sending issue!

Hi there,
Please find the below attachement:
EC200AEUHAR01A30M16_01.304.01.304 (1).zip

Can you please resend link, the link has expired.

Hi there,
I have sent you a follow up email to your email address. Kindly check .