Initial flashing over "OEM-OpenWrt"

Adrian Schmutzler mail at
Mon Feb 8 06:50:49 EST 2021


> -----Original Message-----
> From: Chuanhong Guo [mailto:gch981213 at]
> Sent: Montag, 8. Februar 2021 08:04
> To: Adrian Schmutzler <mail at>
> Cc: OpenWrt Development List <openwrt-devel at>
> Subject: Re: Initial flashing over "OEM-OpenWrt"
> Hi!
> On Sun, Feb 7, 2021 at 12:49 AM Adrian Schmutzler
> <mail at> wrote:
> >
> > 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).
> Wouldn't the same message annoy all current OpenWrt users as OpenWrt
> 19.07 and older don't know about compat_version either?

Due to that exact reason I planned to only cover new devices supported in the future.

> > 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?
> Fixing this kind of breakage is as simple as pressing down the reset button if
> we have the reset button properly defined. I think that's a fair price to pay
> for not reading the instructions :D

Yes, _if_ there is a reset button properly defined. I'm just looking for a nicer way to achieve this.
(And I don't think compat_version is the optimal way to achieve this, just the best that has come to my mind so far.)
Let's see whether the factory-image discussion leds somewhere ...



> --
> Regards,
> Chuanhong Guo
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