# Mender 2.0 beta / mender-artifact 3.0.0b1: "Error selecting images for modification: error validating signature" **URL:** \ **Category:** General Discussions\ **Tags:** thud\ **Created:** [April 24, 2019, 8:53am UTC](https://hub.mender.io/t/mender-2-0-beta-mender-artifact-3-0-0b1-error-selecting-images-for-modification-error-validating-signature/497 "2019-04-24T08:53:10Z")\ **Posts on this page:** 12\ **Page:** 1
**Author:** ![jostor](https://avatars.discourse-cdn.com/v4/letter/j/dbc845/32.png) [@jostor](https://hub.mender.io/u/jostor)\ **Post date:** [April 24, 2019, 8:53am UTC](https://hub.mender.io/t/mender-2-0-beta-mender-artifact-3-0-0b1-error-selecting-images-for-modification-error-validating-signature/497/1 "2019-04-24T08:53:10Z")
I have upgraded to mender 2.0 beta and mender-artifact 3.0.0b1. When I try signing my mender artifact I get this error: “Error selecting images for modification: error validating signature”. When using mender 1.6 and mender-artifact version 2.3.0 with the same key, it was working as it should. I am using thud branch Any suggestions? Thanks for your help! ---
**Author:** ![mirzak](https://yyz2.discourse-cdn.com/flex036/user_avatar/hub.mender.io/mirzak/32/2056_2.png) [@mirzak](https://hub.mender.io/u/mirzak)\ **Post date:** [April 24, 2019, 8:55am UTC](https://hub.mender.io/t/mender-2-0-beta-mender-artifact-3-0-0b1-error-selecting-images-for-modification-error-validating-signature/497/2 "2019-04-24T08:55:26Z")
Hi @jostor, Can you share the full command that you are running? ---
**Author:** ![jostor](https://avatars.discourse-cdn.com/v4/letter/j/dbc845/32.png) [@jostor](https://hub.mender.io/u/jostor)\ **Post date:** [April 24, 2019, 8:58am UTC](https://hub.mender.io/t/mender-2-0-beta-mender-artifact-3-0-0b1-error-selecting-images-for-modification-error-validating-signature/497/3 "2019-04-24T08:58:37Z")
I am running./mender-artifact modify artifact-signed.mender -k private.key Just realized there is also a mender-artifact sign command. This command runs without errors. What is the difference? ---
**Author:** ![mirzak](https://yyz2.discourse-cdn.com/flex036/user_avatar/hub.mender.io/mirzak/32/2056_2.png) [@mirzak](https://hub.mender.io/u/mirzak)\ **Post date:** [April 24, 2019, 8:59am UTC](https://hub.mender.io/t/mender-2-0-beta-mender-artifact-3-0-0b1-error-selecting-images-for-modification-error-validating-signature/497/4 "2019-04-24T08:59:00Z")
Oki, I see it ```auto $ mender-artifact modify my-update-1.0-signed.mender -k private.key Error selecting images for modification: error validating signature ``` ```auto $ mender-artifact -version mender-artifact version 3.0.0b1 ``` ---
**Author:** ![mirzak](https://yyz2.discourse-cdn.com/flex036/user_avatar/hub.mender.io/mirzak/32/2056_2.png) [@mirzak](https://hub.mender.io/u/mirzak)\ **Post date:** [April 24, 2019, 9:07am UTC](https://hub.mender.io/t/mender-2-0-beta-mender-artifact-3-0-0b1-error-selecting-images-for-modification-error-validating-signature/497/5 "2019-04-24T09:07:51Z")
The difference is different code paths but I do not have detailed insights in this part. This looks like a bug to me and I have created a bug in the tracker where you can track progress of this. [https://tracker.mender.io/browse/MEN-2486](https://tracker.mender.io/browse/MEN-2486) Thanks for reporting. ---
**Author:** ![jostor](https://avatars.discourse-cdn.com/v4/letter/j/dbc845/32.png) [@jostor](https://hub.mender.io/u/jostor)\ **Post date:** [April 24, 2019, 9:09am UTC](https://hub.mender.io/t/mender-2-0-beta-mender-artifact-3-0-0b1-error-selecting-images-for-modification-error-validating-signature/497/6 "2019-04-24T09:09:04Z")
Ok, thanks for your help! ---
**Author:** ![lluiscampos](https://yyz2.discourse-cdn.com/flex036/user_avatar/hub.mender.io/lluiscampos/32/112_2.png) [@lluiscampos](https://hub.mender.io/u/lluiscampos)\ **Post date:** [April 24, 2019, 1:15pm UTC](https://hub.mender.io/t/mender-2-0-beta-mender-artifact-3-0-0b1-error-selecting-images-for-modification-error-validating-signature/497/7 "2019-04-24T13:15:36Z")
Hi @jostor and welcome to Mender Hub! I am working in the bug you reported. I actually found two related issues, but not yet the root cause for yours. I need to better understand your workflow. I think you do something like: 1. Create the artifact with `mender-artifact write rootfs ...` (not signed) 2. Then signing it with `mender-artifact modify -k ...` Is that correct? That workflow is not how mender-artifact is meant to be used. And it fails the same way for me in v2.3.0 and v3.0.0b1 Are you doing something else? Thanks! ---
**Author:** ![mirzak](https://yyz2.discourse-cdn.com/flex036/user_avatar/hub.mender.io/mirzak/32/2056_2.png) [@mirzak](https://hub.mender.io/u/mirzak)\ **Post date:** [April 24, 2019, 2:41pm UTC](https://hub.mender.io/t/mender-2-0-beta-mender-artifact-3-0-0b1-error-selecting-images-for-modification-error-validating-signature/497/8 "2019-04-24T14:41:04Z")
@jostor, some further investigation from our side and it seems that the error you reported (or similar) has been present for a long time and last time this worked was in `2.2.0` version of `mender-artifact`. Would be really helpful if you can share the exact commands you used and version when it worked, and when it did not. I have added some additional information to the [ticket](https://tracker.mender.io/browse/MEN-2486) and would like to see that we get comparable results to eliminate that it would be something environment specific. ---
**Author:** ![jostor](https://avatars.discourse-cdn.com/v4/letter/j/dbc845/32.png) [@jostor](https://hub.mender.io/u/jostor)\ **Post date:** [April 30, 2019, 9:22am UTC](https://hub.mender.io/t/mender-2-0-beta-mender-artifact-3-0-0b1-error-selecting-images-for-modification-error-validating-signature/497/9 "2019-04-30T09:22:29Z")
Hi, Sorry for replying so late. I have been busy with other stuff the last week, and had not checked this thread until today. I have been building mender artifact with yocto. After this I have been using the command found here: [https://docs.mender.io/2.0/artifacts/signing-and-verification#an-existing-mender-artifact](https://docs.mender.io/2.0/artifacts/signing-and-verification#an-existing-mender-artifact) `mender-artifact modify artifact-signed.mender -k private.key` This was working fine before upgrading meta-mender, mender and mender-artifact. The version I had of mender-artifact before was 2.3.0. Now I have 3.0.0b1 What is the correct way to sign the artifact after building it with bitbake? Please let me know if you need additional information. ---
**Author:** ![mirzak](https://yyz2.discourse-cdn.com/flex036/user_avatar/hub.mender.io/mirzak/32/2056_2.png) [@mirzak](https://hub.mender.io/u/mirzak)\ **Post date:** [April 30, 2019, 9:55am UTC](https://hub.mender.io/t/mender-2-0-beta-mender-artifact-3-0-0b1-error-selecting-images-for-modification-error-validating-signature/497/10 "2019-04-30T09:55:05Z")
You can use the following command to sign artifacts: ```auto mender-artifact sign -k private.key artifact-signed.mender ``` Doing this trough the `modify` command seemed to have some limitations and we have actually dropped the support of signing using `modify` completely in the upcoming `3.0.0` release. ---
**Author:** ![jostor](https://avatars.discourse-cdn.com/v4/letter/j/dbc845/32.png) [@jostor](https://hub.mender.io/u/jostor)\ **Post date:** [April 30, 2019, 10:19am UTC](https://hub.mender.io/t/mender-2-0-beta-mender-artifact-3-0-0b1-error-selecting-images-for-modification-error-validating-signature/497/11 "2019-04-30T10:19:58Z")
Thanks! I switched to the sign command last week, and it looks like it is working ok. Another thing: Are there any documentation describing how to upgrade to the newest versions (mender 2 and mender-artifact 3)? When I have built a version 3 mender artifact, this isn’t compatible with Mender 1.6.x / mender-artifact 2.3.x (which is on my device right now), so I cannot upload this to my device. I guess I have to build a version 2 artifact which is including mender 2 and mender-artifact 3, and after uploading this, I can upload version 3 artifacts. Is this correct? ---
**Author:** ![mirzak](https://yyz2.discourse-cdn.com/flex036/user_avatar/hub.mender.io/mirzak/32/2056_2.png) [@mirzak](https://hub.mender.io/u/mirzak)\ **Post date:** [April 30, 2019, 10:58am UTC](https://hub.mender.io/t/mender-2-0-beta-mender-artifact-3-0-0b1-error-selecting-images-for-modification-error-validating-signature/497/12 "2019-04-30T10:58:43Z")
That is correct. You first must update to the 2.0 client, before you can utilize the Mender Artifact V3.