Migration from 2025.12 to 2026.5

[vincent....@gmail.com]

Hello all,

I'm in the process of upgrading SWupdate into our product. 

It seems something changed regarding Hawkbit process, specially step after successful upgrade when device tells status back to Hawkbit.

I have following error message:

[ERROR] : SWUPDATE failed [0] ERROR server_hawkbit.c : server_hawkbit_error : 205 : No suitable .swu image found
[ERROR] : SWUPDATE failed [0] ERROR server_hawkbit.c : server_install_update : 1568 : Error processing update chunk named 'mydistrib', version mydistrib-v1.2.3, part os
[TRACE] : SWUPDATE running :  [channel_post_method] : POST to http://myhawkbiturl:9001/default/controller/v1/mydevice/deploymentBase/8160/feedback: \
{ "id": 8160, "time": "20260609T111550", "status": { "result": { "progress": { "cnt" : 0, "of" : 1 }, "finished": "failure" }, "execution": "closed", \
"details" : [ "ERROR channel_curl.c : channel_get_file : 1511 : Cannot compute checksum.","ERROR server_hawkbit.c : server_process_update_artifact : 1364 : \
Checksum does not match: Should be '2ee61ec8b817ad010c535d5d0600c9dfefa7a120', but actually is ''. ","No suitable .swu image found" ] } } \

I didn't dig for a long time but if you have trivial answer, i'm interested :)

Best regards,
Vincent

[Stefano Babic]

Hi Vincent,

On 6/9/26 17:39, vincent....@gmail.com wrote:
> Hello all,
>
> I'm in the process of upgrading SWupdate into our product.
> It seems something changed regarding Hawkbit process,

New is full support for delta update, that means both the SWU and the
.zck can be uploaded as software modules to the Hawkbit server (in any
order), and SWUpdate is able to filter and find the URL for the zck.

> specially step
> after successful upgrade when device tells status back to Hawkbit.

After upgrading I am unaware something was changed.

>
> I have following error message:
>
> [ERROR] : SWUPDATE failed [0] ERROR server_hawkbit.c :
> server_hawkbit_error : 205 : No suitable .swu image found
> [ERROR] : SWUPDATE failed [0] ERROR server_hawkbit.c :

Is the update package a ".swu" file ? Sure it is a cpio, but I had to
distinguish between different files in case Hawkbit (for delta) propose
a SWU (the main) and a "zck" file. So I introduced artifact rules, and
if the filename does not belongs to rules, it is rejected.

Until 2026.05, a file could have any kind of name, but well, yes, the
default was always a .swu extension.

I see above "No suitable .swu image found" - like rules run, neither SWU
nor ZCK file found.

> server_install_update : 1568 : Error processing update chunk named
> 'mydistrib',

It looks like a file without .swu....

> version mydistrib-v1.2.3, part os
> [TRACE] : SWUPDATE running :  [channel_post_method] : POST to http://
> myhawkbiturl:9001/default/controller/v1/mydevice/deploymentBase/8160/
> feedback: \
> { "id": 8160, "time": "20260609T111550", "status": { "result":
> { "progress": { "cnt" : 0, "of" : 1 }, "finished": "failure" },
> "execution": "closed", \
> "details" : [ "ERROR channel_curl.c : channel_get_file : 1511 : Cannot
> compute checksum.","ERROR server_hawkbit.c :
> server_process_update_artifact : 1364 : \
> Checksum does not match: Should be
> '2ee61ec8b817ad010c535d5d0600c9dfefa7a120', but actually is ''. ","No
> suitable .swu image found" ] } } \
>
> I didn't dig for a long time but if you have trivial answer, i'm
> interested :)
>

Support for delta is what I did, and I guess for the release I was the
only one pushing patches for Hawkbit.

Best regards,
Stefano

> Best regards,
> Vincent
>
>
>
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_______________________________________________________________________
Nabla Software Engineering GmbH
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E-Mail: sba...@nabladev.com

[vincent....@gmail.com]

> Is the update package a ".swu" file ?

I'm not sure what you call "update package". 

I have Hawkbit distribution name that matches yocto DISTRO_NAME (without swu extension),
with software module with same name (DISTRO_NAME) that contains the SWU file (image-somestuff.swu).

That "new" rule might by the guilty part indeed :) 

Thanks for your quick answer,
Vincent 

[Tim Kambič]

Hi

We are also facing similar issues.

From our logs:

` 

 [read_lines_notify] : ════ Starting post installation process ════                                                                                                                                                      
 ...                                   
 [__run_cmd] : /data/swu/scripts/swupdate-pre-post-update.sh postinst 2026.0610.092612 prod command returned 0                                                                                                            
 SWUPDATE successful !                                                                                                                                                                                                    

 ERROR channel_curl.c : channel_get_file : 1511 : Cannot compute checksum.                                                                                                                                                

 No suitable .swu image found    

`

Could it be that behaviour of function `swupdate_HASH_final which is responsible for the log of `ERROR("Cannot compute checksum.");` changed in between releases. 

sreda, 10. junij 2026 ob 09:58:12 UTC+2 je oseba vincent....@gmail.com napisala:

[vincent....@gmail.com]

I run hawkbit on plain HTTP but I have CONFIG_SURICATTA_SSL=y, I'm wondering if error log could emerge from this setup (with empty channel_data.sha1hash), not sure what's happening yet 

[Tim Kambič]

Looks like it is linked to this https://groups.google.com/g/swupdate/c/337uTZ2tpMk.

petek, 12. junij 2026 ob 15:47:28 UTC+2 je oseba vincent....@gmail.com napisala:

[ayoub...@googlemail.com]

Hi Stefano,

I'm hitting the same error: 

Jun 17 18:59:17 raspberrypi5-47-0d-30 swupdate.sh[620]: [ERROR] : SWUPDATE failed [0] ERROR server_hawkbit.c : server_hawkbit_error : 204 : No suitable .swu image found

[ayoub...@googlemail.com]

Hi,

with the commit 9b4671d3 "fix(openssl): correctly handle failure of EVP_DigestFinal" all hawkBit deployments using SSL=y will fail !

=> 2026.05 has then a broken hawkbit support !!

ERROR channel_curl.c : channel_get_file : Cannot compute checksum.
ERROR server_hawkbit.c : Checksum does not match: Should be '<sha1>', but actually is ''.
ERROR server_hawkbit.c : No suitable .swu image found

Fix: change the check in channel_get_file() from != 1 to < 0 to match convention

Patch will follows

best regards

[Stefano Babic]

On 6/18/26 11:06, 'ayoub...@googlemail.com' via swupdate wrote:
> Hi,
>
> with the commit 9b4671d3 "fix(openssl): correctly handle failure of
> EVP_DigestFinal" all hawkBit deployments using SSL=y will fail !
>
> => 2026.05 has then a broken hawkbit support !!

Well, I won a 2026.05.1....

>
> ERROR channel_curl.c : channel_get_file : Cannot compute checksum.
> ERROR server_hawkbit.c : Checksum does not match: Should be '<sha1>',
> but actually is ''.
> ERROR server_hawkbit.c : No suitable .swu image found
>
> Fix: change the check in channel_get_file() from != 1 to < 0 to match
> convention
>

Patch as taken alone is correct, but it changes the logic.

> Patch will follows

Thanks !

Stefano

>
> best regards
>
>
>
> On Wednesday, June 17, 2026 at 9:12:24 PM UTC+2 ayoub...@googlemail.com
> wrote:
>
> Hi Stefano,
>
> I'm hitting the same error:
>
> Jun 17 18:59:17 raspberrypi5-47-0d-30 swupdate.sh[620]: [ERROR] :
> SWUPDATE failed [0] ERROR server_hawkbit.c : server_hawkbit_error :
> 204 : No suitable .swu image found
>
> On Monday, June 15, 2026 at 2:42:55 PM UTC+2 Tim Kambič wrote:
>
> Looks like it is linked to this https://groups.google.com/g/

> swupdate/c/337uTZ2tpMk <https://groups.google.com/g/swupdate/
> c/337uTZ2tpMk>.

> groups.google.com/d/msgid/ <https://
> groups.google.com/d/msgid/>
> > swupdate/90d77782-4062-4164-
> b18c-22f5e1fc1fabn%40googlegroups.com
> <http://40googlegroups.com>
> > <https://groups.google.com/d/msgid/
> swupdate/90d77782-4062-4164- <https://
> groups.google.com/d/msgid/
> swupdate/90d77782-4062-4164->
> > b18c-22f5e1fc1fabn%40googlegroups.com?
> utm_medium=email&utm_source=footer
> <http://40googlegroups.com?

> utm_medium=email&utm_source=footer>>.
>
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> _______________________________________________________________________
> Nabla Software Engineering GmbH
> Hirschstr. 111A | 86156 Augsburg | Tel: +49 821

> 45592596 <tel:+49%20821%2045592596>

> Geschäftsführer : Stefano Babic | HRB 40522
> Augsburg
> E-Mail: sba...@nabladev.com
>

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