Hi, when reviewing device-support PRs, I frequently encounter the case that initial flashing means sysupgrading from an OEM-modified OpenWrt.
This obviously means that the config of this OEM-OpenWrt should be wiped to prevent config-clashes, but since we only provide sysupgrade in this case we can only tell the user to do so. In this context, I wonder whether we should exploit the compat_version for that purpose, i.e. make the initial "proper" OpenWrt image version 1.1. Since the OEM-OpenWrt won't know about compat_version, this technically will have the same effect as removing SUPPORTED_DEVICES, i.e. the user will need to use -F (and we still can't check whether he uses the necessary -F -n). However, the compat_version approach will give us the chance to show an additional message, and thus at least will allow to instruct the user during the upgrade itself, and not just in the Wiki or in the commit message (which he might or might not read). The purpose of this e-mail is thus to ask: 1. Do we need this, or do we just expect the user to care, i.e. if he breaks the device by keeping config it's his fault? 2. Is the compat_version solution acceptable? 3. Does somebody have a better idea, or are there already other solutions to the problem I don't know? Recent example is e.g. this one: https://github.com/openwrt/openwrt/pull/3816 Thanks Adrian
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