Unable to connect to Sony α7 C II

[lheinke]

I tried to follow the quick start guide from the README. I was able to compile the program with the given instructions (used different path for SDK), but when trying to run the program for the first time using

$ sonshell --sync-dir "$PWD/photos" --keepalive 3000

I seem not to be able to sucessfully connect to the camera:

INFO  | [INFO] Connecting to camera...
INFO  | [CB] OnError: CrError_Connect_RemoteTransfer_NotSupported (0x8219)
ERROR | [ERROR] Camera not available error=0x8219

I have connected my camera, a Sony α7 C II (listed as ILCE-7CM2 (a7c2) in the supported models section), using a USB cable. When prompted by the camera to select the USB Connect Mode I have selected Remote Shoot (PC Remote).

I am trying to run the program on Fedora Linux 44 (Workstation Edition). One notable thing is that I am not using v2.00.00 of the Sony Camera Remote SDK, but instead v2.01.00 since that is what is currently provided via the Sony website.

[goudvuur]

hi Linus, I've created Sonshell to work with wifi for now. You'll have to connect your camera to the same wifi AP as your laptop (and note its IP). best, b. Op vr 8 mei 2026 4:18 p.m. schreef Linus Heinke ***@***.***>:

…

*lheinke* created an issue (goudvuur/sonshell#2) <#2> I tried to follow the quick start guide from the README. I was able to compile the program with the given instructions (used different path for SDK), but when trying to run the program for the first time using $ sonshell --sync-dir "$PWD/photos" --keepalive 3000 I seem not to be able to sucessfully connect to the camera: INFO | [INFO] Connecting to camera... INFO | [CB] OnError: CrError_Connect_RemoteTransfer_NotSupported (0x8219) ERROR | [ERROR] Camera not available error=0x8219 I have connected my camera, a Sony α7 C II (listed as ILCE-7CM2 (a7c2) in the supported models section), using a USB cable. When prompted by the camera to select the *USB Connect Mode* I have selected *Remote Shoot (PC Remote)*. I am trying to run the program on *Fedora Linux 44 (Workstation Edition)*. One notable thing is that I am not using v2.00.00 of the Sony Camera Remote SDK, but instead v2.01.00 since that is what is currently provided via the Sony website. — Reply to this email directly, view it on GitHub <#2>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/BVJBPY7SYHCK7YTQQNORC7D4ZXUBZAVCNFSM6AAAAACYWDHPZ6VHI2DSMVQWIX3LMV43ASLTON2WKOZUGQYDOMBVGUYDCOA> . Triage notifications on the go with GitHub Mobile for iOS <https://apps.apple.com/app/apple-store/id1477376905?ct=notification-email&mt=8&pt=524675> or Android <https://play.google.com/store/apps/details?id=com.github.android&referrer=utm_campaign%3Dnotification-email%26utm_medium%3Demail%26utm_source%3Dgithub>. You are receiving this because you are subscribed to this thread.Message ID: ***@***.***>

[lheinke]

Hi Bram,

thanks for the very quick reply!

I should have read the README more carefully, I just assumed the SDK would abstract differences between connection methods away.

I have connected my camera to the same router as my PC. First I got this loop:

INFO  | [INFO] Connecting to camera...
INFO  | [INFO] Connecting to camera...
INFO  | [INFO] Connecting to camera...

Then I discovered this was due to Access Authentication being enabled in the settings. When disabling this I was unfortunately back to "square one":

INFO  | [INFO] Connecting to camera...
INFO  | [CB] OnError: CrError_Connect_FailRejected (0x820a)
ERROR | [ERROR] Camera not available error=0x820a

Any ideas what might be going on? I also checked the Pairing settings. The connection events from the command trigger the message:

The device has already been paired with.
CRSDK

On a second attempt of running the command the message does not get triggered anymore. During the "Pairing" tests the error also temporarily changed to:

INFO  | [INFO] Connecting to camera...
INFO  | [CB] OnError: CrError_Connect_ConnectIP (0x8202)
ERROR | [ERROR] Camera not available error=0x8202

[goudvuur]

Hi Linus, I experienced this too when building Sonshell. I think you'll have to explicitly set a username/password on your camera and pass them along to Sonshell using flags. Can you check if this helps move forward? b.

…

On Wed, May 13, 2026 at 4:25 PM Linus Heinke ***@***.***> wrote: *lheinke* left a comment (goudvuur/sonshell#2) <#2 (comment)> Hi Bram, thanks for the very quick reply! I should have read the README more carefully, I just assumed the SDK would abstract differences between connection methods away. I have connected my camera to the same router as my PC. First I got this loop: INFO | [INFO] Connecting to camera... INFO | [INFO] Connecting to camera... INFO | [INFO] Connecting to camera... Then I discovered this was due to *Access Authentication* being enabled in the settings. When disabling this I was unfortunately back to "square one": INFO | [INFO] Connecting to camera... INFO | [CB] OnError: CrError_Connect_FailRejected (0x820a) ERROR | [ERROR] Camera not available error=0x820a Any ideas what might be going on? I also checked the Pairing settings. The connection events from the command trigger the message: The device has already been paired with. CRSDK On a second attempt of running the command the message does not get triggered anymore. During the "Pairing" tests the error also temporarily changed to: INFO | [INFO] Connecting to camera... INFO | [CB] OnError: CrError_Connect_ConnectIP (0x8202) ERROR | [ERROR] Camera not available error=0x8202 — Reply to this email directly, view it on GitHub <#2 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/BVJBPY562NWCVVRFRLJGODL42SAWRAVCNFSM6AAAAACYWDHPZ6VHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHM2DINBRHE3TEOJRG4> . Triage notifications on the go with GitHub Mobile for iOS <https://apps.apple.com/app/apple-store/id1477376905?ct=notification-email&mt=8&pt=524675> or Android <https://play.google.com/store/apps/details?id=com.github.android&referrer=utm_campaign%3Dnotification-email%26utm_medium%3Demail%26utm_source%3Dgithub>. You are receiving this because you commented.Message ID: ***@***.***>

[lheinke]

I have reenabled the authentication check on the camera and passed the user (--user) and password (--pass) along with the command. I get the same error as before:

INFO  | [INFO] Searching for cameras...
INFO  | [FP] using fingerprint from discovered camera (44 bytes)
INFO  | [AUTH] Authenticating (ssh support is on)
INFO  | [AUTH] Using username to connect
INFO  | [INFO] Connecting to camera...
INFO  | [CB] OnError: CrError_Connect_ConnectIP (0x8202)
ERROR | [ERROR] Camera not available error=0x8202

[goudvuur]

Just to double check: can you ping the camera?

[lheinke]

Indeed I can.

[goudvuur]

can you paste the exact command you're using? you can use dummy values for privacy. i'll double check with my camera settings tomorrow, I guess it needs a little setting update somewhere.

[lheinke]

Still basically the same command as above, i.e. one adapted from the very first command in the README:

$ sonshell --sync-dir "$PWD/photos" --keepalive 3000 --user <name> --pass <password> --verbose

I censored the username and password. The sonshell binary resulting from the compilation was symlinked to a location that is in the $PATH so that I can run it from any location.

Have you tried to compile the program with the newer version of the SDK that I had to use (v2.01.00)?

[goudvuur]

Hi Linus,

No, haven't got the time to compile with the newest SDK, sorry. I'm using this one: CrSDK_v2.00.00_20250805a_Linux64PC

I remember having the same issues when developing Sonshell, and solved it by playing around with the wifi/sync settings on my camera and debugging the authentication and fingerprinting with Sony's RemoteCli app. Let me list a few relevant camera settings that seem to work here, maybe you can play around to sync them to mine:

- Network > Cnct./PC Remote > PC Remote Function > PC Remote > ON
- Network > Cnct./PC Remote > PC Remote Function > Cnct. while Power OFF > ON
- Network > Creators' Cloud > Cloud Connection > OFF
- Network > Wi-Fi Connect > ON
- Network > Access Point Set. > <make sure to connect to the same AP as you computer>

The following are only editable when PC Remote is off (turn it back on after editing them)

- Network > Network Option > Access Authen. Settings > Access Authen. > On
- Network > Network Option > Access Authen. Settings > User > <username>
- Network > Network Option > Access Authen. Settings > Password > <password>

Use the menu at Network > Network Option > Access Authen. Settings > Access Authen. Info to double check your credentials.

Also, try running sonshell with the --host xx.xx.xx.xx option and pass the IP of the camera.

If all that fails, build the Sony SDK yourself and run its sample app called RemoteCli to see if that works.

[lheinke]

IT WORKS! Rather embarrassingly I have to admit that the problem likely originated from the quite outdated firmware on my camera. It was still on a 1.X version. I thought I had recently updated it.

[goudvuur]

aaah, that's good! Have fun! Op za 16 mei 2026 9:38 p.m. schreef Linus Heinke ***@***.***>:

…

*lheinke* left a comment (goudvuur/sonshell#2) <#2 (comment)> IT WORKS! Rather embarrassingly I have to admit that the problem likely originated from the quite outdated firmware on my camera. It was still on a 1.X version. I thought I had recently updated it. — Reply to this email directly, view it on GitHub <#2 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/BVJBPY4NB5XMBWD52TZHMUD43C7SNAVCNFSM6AAAAACYWDHPZ6VHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHM2DINRXHEYDQNBTHE> . Triage notifications on the go with GitHub Mobile for iOS <https://apps.apple.com/app/apple-store/id1477376905?ct=notification-email&mt=8&pt=524675> or Android <https://play.google.com/store/apps/details?id=com.github.android&referrer=utm_campaign%3Dnotification-email%26utm_medium%3Demail%26utm_source%3Dgithub>. You are receiving this because you commented.Message ID: ***@***.***>