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OpenWrt 21.02.0 (main firmware)
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@brunompena brunompena released this 13 Sep 17:45
21.02.0
6439978

Compatibility

This release is only compatible with devices that have been updated using these instructions.

If you attempt to use it without having previously updated your device with the above instructions, then you'll most likely brick it!

Upgrade

The upgrade to 21.02.0 can be performed from either the main firmware or the recovery firmware.

Doing it from the main firmware gives you more flexibility:

  • You can upgrade using the CLI or LuCI
  • You can preserve your changes

While from the recovery firmware:

  • You can only use the CLI
  • You must manually backup and restore your changes

Upgrading from the Main Firmware (CLI)

Start by copying the new firmware to the /tmp folder, check its md5sum and then follow the instructions below.

  • To upgrade and preserve your changes:
sysupgrade -o /tmp/openwrt-21.02.0-ath79-generic-zsun_sd100-squashfs-sysupgrade.bin
  • To upgrade without preserving your changes:
sysupgrade -n /tmp/openwrt-21.02.0-ath79-generic-zsun_sd100-squashfs-sysupgrade.bin

Upgrading from the Recovery Firmware (CLI)

Start by copying the new firmware to the /tmp folder, check its md5sum and then follow the instructions below.

  • To upgrade and preserve your changes:
mount_firmware
tar czvf /tmp/backup.tar.gz -C /firmware/overlay/upper .
umount_firmware    # Answer 'no' when asked 'Do you want to write changes to flash?'
mtd write /tmp/openwrt-21.02.0-ath79-generic-zsun_sd100-squashfs-sysupgrade.bin firmware
mount_firmware
tar xzvf /tmp/backup.tar.gz -C /firmware/overlay/upper
umount_firmware    # Answer 'yes' when asked 'Do you want to write changes to flash?'
reboot
  • To upgrade without preserving your changes:
mtd -r write /tmp/openwrt-21.02.0-ath79-generic-zsun_sd100-squashfs-sysupgrade.bin firmware
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