We are testing an EM7595 card with the view to put into our units.
I am having issues trying to provision the card on the network. the advice provided to me from the card supplier was to follow the windows instructions, however windows cannot see the eSIM, and does not provide the settings for me to change.
It feels like the eSIM is hidden from windows, not activated or I am in the wrong mode for windows to see it.
what step an I missing to make the eSim visible to windows?
jyijyi
January 30, 2026, 12:54am
2
What is the sku of your module?
Have you enabled simlpa in at!custom?
BTW, see if this help:
With this fix I can report that everything works!
So in short:
AT+CGLA=? isn’t supported (Please fix your documentation)
SIMLPA doesn’t allow AT+CCHO to work
Disabling SIMLPA requires AT!ENTERCND=“A710” followed by AT!CUSTOM=“SIMLPA”,0
After that AT+CCHO and AT+CGLA= (but not AT+CGLA=?) works
I can confirm that with this instructions and some hacking into lpac to make it not check for AT+CGLA=? I can list the profiles in the eSIM I use
I have enabled the SimLPA, with no effect on the function.
**Modem Details:**
Model: EM7595
FSN: EW34010475050G0
Firmware: SWIX12C_02.02.02.00
Current PRI: SWIX12C_02.02.02.00_GENERIC_002.000_001
!UIMS:1
AT+CCID
+CME ERROR: SIM failure
Any advice would be extremely helpful.
Thanks,
Tim
jyijyi
February 3, 2026, 3:03am
4
how about using the latest firmware?
https://source.sierrawireless.com/resources/airprime/minicard/75xx/em7590/em7590-approved-fw-packages/#sthash.QuzdpHaC.2PeX7N45.dpbs
From below, it seems it cannot even detect the SIM card because +ICCID should at least return the EIM of the internal eSIM without profile:
BTW, can you type AT!SKU? to see what the SKU is for your module?
!SKU: 1105202
!IMPREF:
preferred fw version: 03.01.02.00
preferred carrier name: GENERIC
preferred config name: GENERIC_003.000_006
preferred subpri index: 000
current fw version: 03.01.02.00
current carrier name: GENERIC
current config name: GENERIC_003.000_006
current subpri index: 000
The firmware is updated, but the carrier information is very generic. how Do I change this to our local provider?
jyijyi
February 4, 2026, 1:56am
6
I don’t see there is internal eSIM inside for this SKU.
did you check with the distributor that whether this SKU really has internal eSIM?
Well that is interesting!
The only reason for upgrading from our existing EM4721 cards was for the E-sim functionality.
the local Sierra wireless distributor recommended EM7595.
Is there any way I can confirm this myself?
jyijyi
February 16, 2026, 1:18am
8
you can insert a physical SIM to SIM slot 2 to verify