04-06-2017 01:45 AM - edited 03-08-2019 10:05 AM
We are trying to perform a downgrade from IOS-XE Denali 16.3.3 to 3.6.6E but the switch allways hangs at Built-In Self Test "BIST failed. Abort init..."
All packages are Digitally Signed
Starting System Services
devpts /dev/pts devpts rw,nosuid,noexec,relatime,gid=4,mode=600,ptmxmode=000 0 0
FIPS(NGWC): Flash Key Check : Begin
FIPS(NGWC): Flash Key Check : End, Not Found, FIPS Mode Not Enabled
BIST failed. Abort init ...
BIST failed. Abort init ...
We also can't boot the switch from usbflash with an 3.6x or 3.7x, with 16.x the switch boots without problem.
We also tried with the emergency-install and we had the same results.
When we boot from usb or install IOS 16.3.x the switch boots normaly.
This problem have similarities to that case:
https://supportforums.cisco.com/discussion/13029891/downgrade-ws-c3850-24t-e-16x-3x
or Bug ID's
CSCva22409
CSCul95378
Has anyone maybe a solution to that problem?
Thanks
04-06-2017 06:43 AM
Not sure if it helps your case, but there was another post about this a couple of days ago.
https://supportforums.cisco.com/discussion/13268261/downgrading-denali-1631-3606-3850-put-switch-switch-mode
If not, you may wan to open a case with TAC.
HTH
04-25-2017 04:40 PM
I've just stumbled upon this bug. I think this appliance is a new "hardware version" and doesn't support any IOS versions other than 16.3.X and later.
So there is no workaround to this issue other than to upgrade to Denali.
04-27-2017 05:04 AM
Hey Thiago,
The Bug ID published lacked very important details to help anyone identify if their newly arrived switches are affected by the hardware/software "bug".
May I request if ANYONE who's his this bug post the following information:
Thank you very much.
04-27-2017 06:49 AM
hy leo
thats possible that new hardware version isn't compatible... maybe a newer hardware release.
I wasn't able to resolve that problem. With the new IOS 16.x the switch ran always without problems. with the 3.x IOS version the switch always stuck on BIST Fail.
I resolved my problem with an RMA.
SN: SFCW192xxxxx (BIST Fail)
MO: WS-C3850-48P-S
SN: SFCW204xxxxx (No problem to downgrade)
MO: WS-C3850-48P-S
04-27-2017 03:00 PM
FCW192
Hey Thiago,
You're not hitting this bug. This doesn't make any sense. Serial number tells me the switch was manufactured in 2015 (around May). So it's not a new switch manufactured in 2017.
Hey Thiago, the old appliance (I know it's already been RMA-ed) PID, was there a version number at the end? If it does, do you remember what it was?
Thanks for the serial number and the PID. Will help others.
01-14-2020 12:17 PM
I get it -- this post is OOOOOOLD....
I'm just posting a link that appears to address this process of what you do if you end up getting the BIST Init error. For me, I substituted the bin file for v16
Find answers to your questions by entering keywords or phrases in the Search bar above. New here? Use these resources to familiarize yourself with the community: