FIX: Update initial offset address to 0x0 in final esptool command

[conana]

On a new V3, I found myself working through to the end of the Bin/readme for uploading the precompiled binaries but the final flash was unsuccessful. Changing the offset address in esptool for the initial binary (bootloader) to 0x0 resolved the problem, so here's a tweak to the instructions. Caveat: I've not tested whether the pre-V3 hardware needs this also.

[GuruSR]

That is odd, because the bootloader is supposed to be at 0x1000.
Bootloader - ESP32

[conana]

Honestly, I'm very new to embedded development, so don't profess to know otherwise. I only had one pass at Watchy_GSR, where the watchy didn't come back aftre reset (was stuck in a reset/boot loop I think). However, I was able earlier to build the example stock firmware with Arduino IDE so I compared the bin/readme instructions with that known-good process. This was the build command in Arduino IDE for stock example watchfaces:

"/Users/xxxxxxxx/Library/Arduino15/packages/esp32/tools/esptool_py/4.5.1/esptool" --chip esp32s3 --port "/dev/cu.usbmodem1101" --baud 921600 --before default_reset --after hard_reset write_flash -z --flash_mode dio --flash_freq 80m --flash_size 8MB 0x0 "/Users/xxxxxxxx/Library/Caches/arduino/sketches/7320E83775A1BAB76935C315E617A1B9/7_SEG.ino.bootloader.bin" 0x8000 "/Users/xxxxxxxx/Library/Caches/arduino/sketches/7320E83775A1BAB76935C315E617A1B9/7_SEG.ino.partitions.bin" 0xe000 "/Users/xxxxxxxx/Library/Arduino15/packages/esp32/hardware/esp32/2.0.17/tools/partitions/boot_app0.bin" 0x10000 "/Users/xxxxxxxx/Library/Caches/arduino/sketches/7320E83775A1BAB76935C315E617A1B9/7_SEG.ino.bin"

The only difference was the 0x0 here vs the 0x1000 in the bin/readme, so I changed it and it worked.