I am trying to update the firmware of the HL7802 that we have mounted on our board. The current firmware is 126.96.36.199 and we want to upgrade to 188.8.131.52. The chip is powered and no communication with it is performed from our mcu. I am connected to the uart lines using a usb ttl-232r plugged in a windows machine.
I tried both the One-Click option and the sft Standlone and both aren’t working. Here is the debug output when I try to update with sft Standalone:
SFT v2.10.2101.0 Jan 29 2021 10:37:07 File to download: sysHeader_backup.bin.alt1250 File to download: u-boot.bin File to download: sysHeader.bin.alt1250 File to download: partmap.bin File to download: AppFW_flash.bin File to download: ue_lte_2g.fw File to download: ue_lte.fw2 File to download: sysHeader_modem.bin.alt1250 Using port COM5 at 921600 bps Attempting communication at 115200 baud... success Synchronizing with module... AT port detected. Trying to synchronize with bootloader... Synchronization success. Flexible partition map detected Flash mapping retrieved. Using new flexible mapping. Turbo mode available. Downloading sysHeader_backup.bin.alt1250 segment 1 Starting download of 0x410 bytes [> ] 0 % (0.00 KB/s) Error while downloading sysHeader_backup.bin.alt1250 - aborting download Failed to change baud rate Hit ENTER to continue...
I don’t understand why the synchronization is successful but apparently it won’t change the baud rate.