Tachyon - ESIM - UK - please help

Tachyon
,
1

I am installing a SMARTY UK eSIM on a Tachyon running particle-tachyon-ril 0.4.5-1. SMARTY requires a separate four-digit confirmation code. The SM-DP+ connection and AuthenticateClient steps succeed, but download ends with status 107 and Prepare download failed (es10b): -50340615 ISDR 127. How can I pass the confirmation code/ePIN? Is there an updated RIL/LPA package or supported lpac method?

Is this going to work? Or should I give up? Thanks.

2

Hi again,

I've spent quite a bit more time investigating this and I think I've found another user hitting what appears to be the same issue:

https://community.particle.io/t/issues-provisioning-esim-following-latest-instructions/69652

Thomas was using Vodafone Germany rather than SMARTY UK, but the behaviour is remarkably similar. In both cases:

  • The download reaches the SM-DP+ server successfully.
  • Authentication succeeds.
  • The failure occurs during PrepareDownload (ES10b).
  • The carrier requires a separate confirmation code (ePIN / 4-digit confirmation code).
  • The current particle-tachyon-ril-ctl / lpa tooling doesn't appear to provide any mechanism to supply that code.

I also spent some time reverse-engineering the installed /usr/bin/lpa (version 0.1.6). It appears to be a Kigen sample LPA, and I couldn't find any supported mechanism for supplying a confirmation code (no command-line option, no interactive prompt, etc.). I also confirmed that running it directly against the eUICC works using the serial transport, but it still reaches the same ES10b failure.

So my question is:

Does the Tachyon currently support downloading carrier eSIM profiles that require a confirmation code (for example SMARTY UK or Vodafone Germany)?

If the answer is yes:

  • Is there a newer particle-tachyon-ril or lpa package that supports this?
  • Or is there another supported provisioning method that should be used instead of particle-tachyon-ril-ctl esim download?

If the answer is no, it would be really helpful to know whether confirmation-code-protected eSIMs are on the roadmap, as I suspect this will affect several European carriers.

Thanks! Hopefully Thomas's findings and mine together help narrow this down.

3

Crickets.

Has anyone got Tachyon working in the UK with third party ESIM?

4

mentioning @Support to see if they have anything on the topic.

Cheers,

5

I've made an eSIM with auth work here in Portugal. Packaging up the patches and instructions, and then I'll send it through. LPA does indeed seem to be the issue.