ESP32 download tool failes to upload binary

Captain.Chode
Posts: 15
Joined: Mon Mar 11, 2019 4:23 pm

ESP32 download tool failes to upload binary

Postby Captain.Chode » Tue Jun 29, 2021 8:24 am

I have a small project written in platformio with the Arduino framework. I have exported the binary and try to upload it with the ESP flash downloader. The first upload succeeded (to a brand new devmodule), but for the second time (to the same module) failes with the following error:

is stub and send flash finish

I didn't set anything security related or whatsoever. What could be the problem?

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Captain.Chode
Posts: 15
Joined: Mon Mar 11, 2019 4:23 pm

Re: ESP32 download tool failes to upload binary

Postby Captain.Chode » Wed Jun 30, 2021 7:04 pm

So apparently uploading these files solved the problem:

bootloader.bin @ 0x1000
boot_app0.bin @ 0xe000
partitions2.bin @ 0x8000

After that it is possible to upload just the firmware. Not sure why did it work in the first place though...
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