An upgrade of OpenWrt can be done in many ways Upgrade with LuCi, Upgrade with sysupgrade or Upgrade OpenWrt with the new Attended SysUpgrade functionality asu through the OpenWrt Firmware picker or using the OpenWrt Attended Upgrade Client, acu. We will talk about the OpenWrt Imagebuilder in a following episode.

0:00 why upgrade? upgrade at a glance
2:33 update vs upgrade
4:16 Why reimage for upgrade?
7:13 read/write storage
9:30 what is kept after upgrades?
12:13 how opkg keeps track of packages
15:28 attended sysupgrade (asu)
17:14 asu from the router
19:17 asu from the shell
20:20 one last thought

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