API cmd.carrier.select and config.wan.connection succeed but does not switch carrier on BYO eSIM A (firmware 8.5.2)

General
1

Hi all,

I’m building a personal app for my MAX BR1 Pro 5G (firmware 8.5.2) and one of the functions is to switch carriers on the BYO eSIM A

Manual carrier selection works perfectly in the web UI (Cellular → Carrier Selection → Manual Select → pick carrier → Save and Close).

However, the same change via API returns stat: “ok” but the active carrier never actually switches. No connection drop occurs and the Peplink UI continues showing the old carrier.

I have tried two approaches:

  1. The documented endpoint: POST /api/cmd.carrier.select with payload containing connId: 2 and selectedCarrier: { mcc, mnc, pcs, name }
  2. The full config update that the UI itself sends: POST /cgi-bin/MANGA/api.cgi with func: “config.wan.connection”, instantActive: true, and the complete eSim1.carrierSelection block

Both calls succeed, but the router does not apply the new carrier.

Has anyone successfully changed the active carrier via API on a BYO eSIM A profile in firmware 8.5.x? Is there a missing cmd.config.apply, a reconnect step, or a special requirement for eSIM profiles that isn’t documented?

Any working examples or hints would be greatly appreciated.

Thank you very much for your assistance and guidance,

Mark

2

Upgrade to 8.5.3 or later , we have done this.

3

Thank you Jonathan! I’ll grab an update in the morning and give it a shot.