HL7802 won't boot on 4.5.4.0 and 4.4.6.0 but runs with 4.3.9.0

IoT Modules HL78
3

Hi @Donald

Thanks for answering!

I’m running SWITRACEMODE RnD:

modem at AT+SWITRACEMODE?
atshell : AT+SWITRACEMODE?
atshell : RnD
atshell : OK

For version 4.4.6.0 I can no longer check since the hl7802 just blocks after the do_halt statement in the bootloader but I was running SWITRACEMODE RnD up until the time when the hl7802 stopped booting on 4.4.6.0.

To clarify, since I got stuck on 4.4.6.0 when the hl7802 application stopped booting I downgraded to 4.5.4.0 where it still wouldn’t boot, then to 4.3.9.0 which boots and runs.

Previously I made a failed attempt to upgrade using an XMODEM patch file. I picked the wrong fw though (hl7800 instead of 7802) and the download to the modem got stuck after maybe 10% download. Then I successfully upgraded to 4.5.4.0 using the standalone sft installer for Linux. Things were looking good for about 2 days until the current issues with getting stuck in bootloader started.