Project homepage
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https://github.com/technyon/nuki_hub

Howto flash (Webflash)
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-The easiest way to install is to use the web installer using a compatible browser like Chrome/Opera/Edge
-Open https://technyon.github.io/nuki_hub/
-Connect your ESP to the computer using USB
-Click on "Connect"
-Select your device from the list and click on "Connect"
-Select "INSTALL NUKIHUB"
-Optionally select "Erase device"
-Click on "Next"
-Click on "Install"

NOTE: Webflash is not available for the ESP32-Solo1

Howto flash (Espressif Flash Download Tools)
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- Download the Espressif Flash Download Tools (https://www.espressif.com/en/support/download/other-tools)
- Unpack and start tool
- Add all four bin files with the corresponding address:

ESP32
e000 boot_app0.bin
1000 bootloader.bin
8000 nuki_hub.partitions.bin
10000 nuki_hub_esp32.bin

ESP32-S3
e000 boot_app0.bin
0 bootloader.bin
8000 nuki_hub.partitions.bin
10000 nuki_hub_esp32s3.bin

ESP32-C3
e000 boot_app0.bin
0 bootloader.bin
8000 nuki_hub.partitions.bin
10000 nuki_hub_esp32c3.bin

ESP32-Solo1
e000 boot_app0.bin
1000 bootloader.bin
8000 nuki_hub.partitions.bin
10000 nuki_hub_esp32solo1.bin

Make sure the checkmarks for all files are enabled.

- Select the COM-Port the ESP device is connected to
- Click "START"
- The flash process should start. If it doesn't you eventually have to press a button (labeled BOOT or similar) or short the corresponding PIN on the ESP device


Howto flash (esptool)
--

As an alternative to the Download Tools, you can also use the esptool from the Espressif SDK. The command line to flash looks like this:

## ESP32

esptool.py --chip esp32 --port /dev/ttyUSB0 --baud 921600 --before default_reset --after hard_reset write_flash -z --flash_mode dio --flash_freq keep --flash_size detect 0xe000 boot_app0.bin 0x1000 bootloader.bin 0x10000 nuki_hub_esp32.bin 0x8000 nuki_hub.partitions.bin

## ESP32-S3

esptool.py --chip esp32s3 --port /dev/ttyUSB0 --baud 921600 --before default_reset --after hard_reset write_flash -z --flash_mode dio --flash_freq keep --flash_size detect 0xe000 boot_app0.bin 0x0 bootloader.bin 0x10000 nuki_hub_esp32s3.bin 0x8000 nuki_hub.partitions.bin

## ESP32-C3

esptool.py --chip esp32c3 --port /dev/ttyUSB0 --baud 921600 --before default_reset --after hard_reset write_flash -z --flash_mode dio --flash_freq keep --flash_size detect 0xe000 boot_app0.bin 0x0 bootloader.bin 0x10000 nuki_hub_esp32c3.bin 0x8000 nuki_hub.partitions.bin

## ESP32Solo1

esptool.py --chip esp32 --port /dev/ttyUSB0 --baud 921600 --before default_reset --after hard_reset write_flash -z --flash_mode dio --flash_freq keep --flash_size detect 0xe000 boot_app0.bin 0x1000 bootloader.bin 0x10000 nuki_hub_esp32solo1.bin 0x8000 nuki_hub.partitions.bin

Adjust the serial device and path to the binaries if necessary.