You can try and force it and then it won't boot and you will have to 
upgrade it to get it to boot...   Please don't ask me how I know this...

Robert

On 09/28/2016 04:09 PM, Nathan Anderson via Mikrotik-users wrote:
> (Holy cross-posting, Batman!)
>
> It is possible that MT did a board revision, and the newer revision of
> the hardware requires 6.35.2 as minimum for the reasons Josh stated
> (drivers/hardware support, etc.).  However, you could certainly try your
> luck with Netinstall.
>
> What model of CCR is this?
>
> -- Nathan
>
> *From:*Af [mailto:[email protected]] *On Behalf Of *Josh Luthman
> *Sent:* Wednesday, September 28, 2016 4:07 PM
> *To:* [email protected]
> *Cc:* Mikrotik Users; [email protected]; Principal WISPA Member List
> *Subject:* Re: [AFMUG] Can't downgrade mikrotik routeros
>
> Probably a requirement for drivers or the firmware :(
>
> Josh Luthman
> Office: 937-552-2340
> Direct: 937-552-2343
> 1100 Wayne St
> Suite 1337
> Troy, OH 45373
>
> On Sep 28, 2016 7:05 PM, "Darin Steffl" <[email protected]
> <mailto:[email protected]>> wrote:
>
> Looks like the os won't let me go below the factory version according to
> the log file pic I attached.
>
> Would net install allow me to go to the version we want?
>
> On Wednesday, September 28, 2016, Darin Steffl <[email protected]
> <mailto:[email protected]>> wrote:
>
> Yes I clicked downgrade already and tried it from the command line.
>
> On Wednesday, September 28, 2016, Josh Luthman
> <[email protected] <mailto:[email protected]>> wrote:
>
> Did you click downgrade?  You don't do this like a normal update.
>
> Josh Luthman
> Office: 937-552-2340 <tel:937-552-2340>
> Direct: 937-552-2343 <tel:937-552-2343>
> 1100 Wayne St
> Suite 1337
> Troy, OH 45373
>
> On Sep 28, 2016 6:58 PM, "Darin Steffl" <[email protected]
> <mailto:[email protected]>> wrote:
>
> Hello all,
>
> We are trying to install our normal mikrotik os version which is 6.32.4
> since we have tested and found it the most stable.
>
> The latest ccr router we received has 6.35.2 on it and we're not having
> any luck getting it to downgrade to the stable bug fix version. Some
> mikrotik forum posts say that you're not able to downgrade the software
> below what it shipped with. I find this doesn't make sense because the
> os didn't ship with the bug fix release, but rather the more unstable
> "current" version.
>
> Any advice how to downgrade when the normal procedure doesn't work? Is
> it possible to downgrade to a version lower than what the factory installed?
>
> If not, would net install work to force the version we want? The way it
> is now, there's not even a possible way to install the latest 6.34.6 bug
> fix release since it's lower than 6.35.2
>
> Any help is appreciated. Thanks
>
> --
>
> Darin Steffl
>
> Minnesota WiFi
>
> www.mnwifi.com <http://www.mnwifi.com/>
>
> 507-634-WiFi
>
> <http://www.facebook.com/minnesotawifi> Like us on Facebook
> <http://www.facebook.com/minnesotawifi>
>
>
>
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> Members mailing list
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>
>
>
> --
>
> Darin Steffl
>
> Minnesota WiFi
>
> www.mnwifi.com <http://www.mnwifi.com/>
>
> 507-634-WiFi
>
> <http://www.facebook.com/minnesotawifi> Like us on Facebook
> <http://www.facebook.com/minnesotawifi>
>
>
>
> --
>
> Darin Steffl
>
> Minnesota WiFi
>
> www.mnwifi.com <http://www.mnwifi.com/>
>
> 507-634-WiFi
>
> <http://www.facebook.com/minnesotawifi> Like us on Facebook
> <http://www.facebook.com/minnesotawifi>
>
>
>
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