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esptool.py image_info now prints a summary of segment memory types (IRAM, DRAM, etc) based on the address range.
esptool.py write_flash will warn if it looks like a bootloader binary is built for ESP32-S2 or another newer chip (support for flashing ESP32-S2 will be added in a future version.)
Bug Fixes
Removed ESP8266 SDK & ESP-IDF dependencies when building the flasher stub binaries. Previously the SDKs were used to include some register address macros, only. This removes any uncertainty about whether the flasher stub binary is a derived work of either SDK. The flasher stub binary itself is the same as the binary in v2.7.
Fixed minor issues running esptool automated tests on macOS.
Minor flake8 fixes including compatibility with newer flake8 versions.
ESP32 Only
Features
Support detection of new ESP32 silicon revisions
New esptool.py elf2image --min-rev X option allows creating a .bin file which only supports a minimum ESP32 silicon revision.
Bugfixes
Fix burning custom MAC with espefuse.py when 3/4 Coding Scheme is set (#447)