# Don't Connect between module SARA-R510M8S-61B with Soracom eSIM (SGEIL01) **URL:** \ **Category:** Cellular\ **Created:** [March 10, 2025, 5:50am UTC](https://community.sparkfun.com/t/dont-connect-between-module-sara-r510m8s-61b-with-soracom-esim-sgeil01/63872 "2025-03-10T05:50:27Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![TruongVu](https://yyz1.discourse-cdn.com/sparkfun/user_avatar/community.sparkfun.com/truongvu/32/8894_2.png) [@TruongVu](https://community.sparkfun.com/u/TruongVu)\ **Post date:** [March 10, 2025, 5:50am UTC](https://community.sparkfun.com/t/dont-connect-between-module-sara-r510m8s-61b-with-soracom-esim-sgeil01/63872/1 "2025-03-10T05:50:27Z")
Hi team, I am testing the SARA-R510M8S module with a Soracom eSIM(SGEIL01). I scanned for available networks, but none were found, even though I have configured the APN and authentication as follows: [08:22:07.844] AT+CGDCONT=1,“IP”,“[soracom.io](http://soracom.io/)” [08:22:07.864] OK [08:22:09.885] AT+UAUTHREQ=1,1,“sora”,“sora” [08:22:09.905] OK However, it is still not working. I have connected the antenna correctly, and when I tested with a Vietnam carrier’s SIM card, it worked fine. I also removed the SIM card, soldered the eSIM onto the board, and was able to read the **ICCID** and **IMSI** , but I still couldn’t find any available networks. I found a similar issue discussed in this forum thread: [Unable to connect the SARA R510M8S module to the network with Hologram SIM, despite correct APN configuration in Vietnam. · Issue #52 · sparkfun/SparkFun\_u-blox\_SARA-R5\_Arduino\_Library · GitHub](https://github.com/sparkfun/SparkFun_u-blox_SARA-R5_Arduino_Library/issues/52)). However, the only suggestion I saw was to update the firmware. I couldn’t find any firmware updates for the SARA-R510M8S-61B-01, and I am currently using firmware version **03.25,A00.02**. Do I need any configuration? Any help would be appreciated. Thanks Best regard, Vu. ---
**Author:** ![TS-Russell](https://yyz1.discourse-cdn.com/sparkfun/user_avatar/community.sparkfun.com/ts-russell/32/6092_2.png) [@TS-Russell](https://community.sparkfun.com/u/TS-Russell)\ **Post date:** [April 2, 2025, 8:17am UTC](https://community.sparkfun.com/t/dont-connect-between-module-sara-r510m8s-61b-with-soracom-esim-sgeil01/63872/2 "2025-04-02T08:17:59Z")
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**Author:** ![TS-Russell](https://yyz1.discourse-cdn.com/sparkfun/user_avatar/community.sparkfun.com/ts-russell/32/6092_2.png) [@TS-Russell](https://community.sparkfun.com/u/TS-Russell)\ **Post date:** [April 2, 2025, 8:53pm UTC](https://community.sparkfun.com/t/dont-connect-between-module-sara-r510m8s-61b-with-soracom-esim-sgeil01/63872/3 "2025-04-02T20:53:45Z")
Try posting this on the [cell section of the u-blox forum](https://portal.u-blox.com/s/topic/0TO2p000000Hr7cGAC/cellular)