ESP8266 with 1MiB flash

Vendor: Espressif
Features: WiFi
Source on GitHub: esp8266/GENERIC_1M
More info: Website

The following are daily builds of the ESP8266 firmware tailored for modules with only 1MiB of flash. This firmware uses littlefs as the filesystem. When upgrading from older firmware that uses a FAT filesystem please backup your files first, and either erase all flash before upgrading, or after upgrading execute uos.VfsLfs2.mkfs(bdev).

Installation instructions

Program your board using the program as described the tutorial.



v1.18 (2022-01-17) .bin [.elf] [.map] [Release notes] (latest)
v1.17 (2021-09-02) .bin [.elf] [.map] [Release notes]
v1.16 (2021-06-18) .bin [.elf] [.map] [Release notes]
v1.15 (2021-04-18) .bin [.elf] [.map] [Release notes]
v1.14 (2021-02-02) .bin [.elf] [.map] [Release notes]
v1.13 (2020-09-02) .bin [.elf] [.map] [Release notes]

Nightly builds

v1.18-56-g517e82eb6 (2022-01-28) .bin [.elf] [.map]
v1.18-42-g30b6ce86b (2022-01-27) .bin [.elf] [.map]
v1.18-33-gea5744fd8 (2022-01-22) .bin [.elf] [.map]
v1.18-32-gbb9d68845 (2022-01-22) .bin [.elf] [.map]