ST87Mxx GUI - download firmware function does not work

[MZina.1]

Download firmware option on ST87Mxx GUI 2.4.3.0 does not work on EVKITST87M01-2, module on board is “ST87M01-1301”.

If I let it run then it says: “Please reset board” and nothing happens after reset, only way out is “Cancel” after which it says “Download Aborted”.

If I try to reset board before message “Please reset board” it says: “A problem occurs : error: error sending “AT+IPR=460800”: device responded with “OK”.

 

[Didier HERROUIN]

Dear MZina.1,

Do you confirm that you have selected the standard COM port and 115200kbps for the connection ?

Before starting the download, set the modem UART to 115200kbps (sending AT+IPR=115200) and try again to download the file (and please provide a snapshot of the “Download” page of the GUI).

Best regards,

[MZina.1]

What kind of answer is this? How do you think I connected to modem in a first place? There is no good documentation on bootloader protocol except mention how to get to bootloader in “ST87MXX_FW_Update_Application_Note.pdf”. What we was able to achieve is get ack “0x9a” after reset and sending “0xc5” as described in document. After this modem does not answer to any command. Document specifies “ATI01\r” should response with booloader version, this is what GUI is expecting. Probable cause is bad bootloader, otherwise modem is working fine except updating firmware is not possible.

[Didier HERROUIN]

Dear MZina.1,
Indeed, as a general rule, ST does not disclose details about the bootloader.
To confirm that the bootloader is defective, please try a FW download using the “Boot Tool” (st8700_boot_tool_r0_8.exe) which can be found in the zip file “spi_flash_tools.zip” among the Application Notes list (saved on your PC when you have installed the GUI). 

The sequence can be launched from a PC Command Prompt, as explained in the AN you mentioned (““ST87MXX_FW_Update_Application_Note.pdf”). 

I put in attached a picture of my own result (I press and I maintain the “Reset” button before launching the .exe, then I release it when I see “please reset ST8700”).
Please share snapshots of your results.

PS: Note that for security reason, the chip prevents decommissioned versions : You can only install the same version or a higher one.

Best regards,