Downgrading to JB

Has anyone successfully downgraded from KK to JB? I need to downgrade my one and only MC40 back to JB but have been unable to. I get the following:

Finding update package...

Opening update package...

Verifying update package...

Stop update, check_hw() return false

Installation aborted.

Thomas Panariello
Here's some additional

Here's some additional information regarding attempts to downgrade my device back to JB. I tried loading the following JB packages:

M40N0JXXVRUxx20520.zip

M40N0JXX0RUxx20520.zip

M40N0JXXVRUxx30208.zip

M40N0JXX0RUxx30208.zip (this is what was loaded prior to upgrading to KK)

I get the following error when attempting to load either version of the 0208 image:

Finding update package...

Opening update package...

Verifying update package...

Stop update, check_hw() return false

Installation aborted.

I get the following error when attempting to load M40N0JXXVRUxx20520.zip:

Finding update package...

Opening update package...

Verifying update package...

Using built-in update-binary to update

assert failed: getprop("ro.motosln.feature.voice"

) == "true"

Installation aborted.

I get the following error when attempting to load M40N0JXX0RUxx20520.zip:

Finding update package...

Opening update package...

Verifying update package...

Using built-in update-binary to update

assert failed: getprop("ro.motosln.feature.voice"

) == "none"

Installation aborted.

I tried loading the packages via adb sideload and Recovery Mode. No problems upgrading to KK. My device hardware config shows a Touch of "Novatech." So I followed David's procedure for that type. I also loaded the optional "recovery-update-voice-kk.zip."

One question I have is regarding the MFD on my device. It shows "MFD: 13NOV12 MVKS." Can this be the root cause?

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Bijosh Thykkoot...
Hi Tom,Could you please let

Hi Tom,

Could you please let us know the KK OS version you are using? In latest build, downgrade is working fine. Also, after downgrade, we need to perfom a factory reset as well.

Regards,

-Bijosh.

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Thomas Panariello
Hi Bijosh,This is what is

Hi Bijosh,

This is what is currently loaded on my MC40:

90-4AJ22-K-0010-0002-V0-M1-041615

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John Thurmes
I see the same issue as what

I see the same issue as what Tom is reporting.

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Jimmy Joseph
Issue was reproduced as

Issue was reproduced as engineering side and fix is ready as of 051515.

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John Thurmes
Is a fix available for the

Is a fix available for the downgrade issue that Tom reported?

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Jimmy Joseph
Tom, Please let us know if

Tom, Please let us know if you are able to downgrade to JB

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Thomas Panariello
Yes, thanks Jimmy!

Yes, thanks Jimmy!

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Chris Morris
Please advise where the link

Please advise where the link is posted to correct this issue? I have a customer experiencing same problem. Thanks,

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David Singer
Chris,From what I was told,

Chris,

From what I was told, there were JB to KK issues early on, but SW said you need to be on the latest BSP (060215) or newer first before trying to downgrade back to JB... please give that a shot and let us know.


David

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