# restore default setting ? **URL:** \ **Category:** MC/EM Series\ **Created:** [July 31, 2012, 6:36am UTC](https://forum.sierrawireless.com/t/restore-default-setting/5778 "2012-07-31T06:36:06Z")\ **Posts on this page:** 11\ **Page:** 1
**Author:** ![david1234](https://avatars.discourse-cdn.com/v4/letter/d/c67d28/32.png) [@david1234](https://forum.sierrawireless.com/u/david1234)\ **Post date:** [July 31, 2012, 6:36am UTC](https://forum.sierrawireless.com/t/restore-default-setting/5778/1 "2012-07-31T06:36:06Z")
Hello , is there a way to restore the factory setting of the modem? Thanks , ---
**Author:** ![tomridl](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.sierrawireless.com/tomridl/32/2704_2.png) [@tomridl](https://forum.sierrawireless.com/u/tomridl)\ **Post date:** [July 31, 2012, 7:14am UTC](https://forum.sierrawireless.com/t/restore-default-setting/5778/2 "2012-07-31T07:14:29Z")
AT&F ---
**Author:** ![david1234](https://avatars.discourse-cdn.com/v4/letter/d/c67d28/32.png) [@david1234](https://forum.sierrawireless.com/u/david1234)\ **Post date:** [July 31, 2012, 10:26am UTC](https://forum.sierrawireless.com/t/restore-default-setting/5778/3 "2012-07-31T10:26:38Z")
it’s doesn’t change the setting it’s all the same before the reset I have some modems that don’t connect to the my cellular network (I have check my device\antena\SIM\another modem - they are all good and working) this is a screenshot of what I get when i try to dial any help will be good , ---
**Author:** ![tomridl](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.sierrawireless.com/tomridl/32/2704_2.png) [@tomridl](https://forum.sierrawireless.com/u/tomridl)\ **Post date:** [July 31, 2012, 11:47am UTC](https://forum.sierrawireless.com/t/restore-default-setting/5778/4 "2012-07-31T11:47:15Z")
Are you sure the command ATDT_99# is correct? I couldn’t find ATDT in the AT Command user guide. The guide says to do ATD_99\*\*\*1# ---
**Author:** ![david1234](https://avatars.discourse-cdn.com/v4/letter/d/c67d28/32.png) [@david1234](https://forum.sierrawireless.com/u/david1234)\ **Post date:** [July 31, 2012, 1:01pm UTC](https://forum.sierrawireless.com/t/restore-default-setting/5778/5 "2012-07-31T13:01:30Z")
yes , this is the correct command this setting is working with the MC8790 , but I have some modem(MC8790) that doesn’t work - so I’m to understand why , and fix them. ---
**Author:** ![dl5162](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.sierrawireless.com/dl5162/32/2169_2.png) [@dl5162](https://forum.sierrawireless.com/u/dl5162)\ **Post date:** [July 31, 2012, 2:16pm UTC](https://forum.sierrawireless.com/t/restore-default-setting/5778/6 "2012-07-31T14:16:21Z")
I can see the response to your diallers AT+CPIN? request being ```auto +CPIN: PH-NET PIN ``` This means the device is SIM locked. You need a code from your operator to unlock it. And yes, ATDT is perfectly OK although the T (for Tone dialling) doesn’t make any sense. Dropping the \*\*\*1 is also OK if you just want to connect using the default profile. But none of this matters unless you unlock the device first. Bjørn ---
**Author:** ![david1234](https://avatars.discourse-cdn.com/v4/letter/d/c67d28/32.png) [@david1234](https://forum.sierrawireless.com/u/david1234)\ **Post date:** [July 31, 2012, 2:31pm UTC](https://forum.sierrawireless.com/t/restore-default-setting/5778/7 "2012-07-31T14:31:01Z")
the sim is open when I use the same sim with another modem - it’s working . maybe the problem is in the setting of this modem ? ---
**Author:** ![dl5162](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.sierrawireless.com/dl5162/32/2169_2.png) [@dl5162](https://forum.sierrawireless.com/u/dl5162)\ **Post date:** [July 31, 2012, 3:46pm UTC](https://forum.sierrawireless.com/t/restore-default-setting/5778/8 "2012-07-31T15:46:16Z")
> [@david1234](#): > > the sim is open > when I use the same sim with another modem - it’s working . > maybe the problem is in the setting of this modem ? Yes, the modem is locked to another SIM and/or operator. You need the PIN code from the operator that locked it. This is not your SIM PIN code. So you need to go back wherever you got this modem and ask them to unlock it for you. ---
**Author:** ![david1234](https://avatars.discourse-cdn.com/v4/letter/d/c67d28/32.png) [@david1234](https://forum.sierrawireless.com/u/david1234)\ **Post date:** [August 1, 2012, 6:20am UTC](https://forum.sierrawireless.com/t/restore-default-setting/5778/9 "2012-08-01T06:20:18Z")
I bought it from Sierra lest year and the modem work for a 8 mounts with the same sim , so why it’s locked ? and there isn’t a “format” \ default code? thanks , ---
**Author:** ![dl5162](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.sierrawireless.com/dl5162/32/2169_2.png) [@dl5162](https://forum.sierrawireless.com/u/dl5162)\ **Post date:** [August 14, 2012, 11:20am UTC](https://forum.sierrawireless.com/t/restore-default-setting/5778/10 "2012-08-14T11:20:49Z")
> [@david1234](#): > > I bought it from Sierra lest year > and the modem work for a 8 mounts with the same sim , > so why it’s locked ? Yes, that does sound strange. I have no explanation. But as long as the modem requests PH-NET PIN then you are not supposed to make it work without entering that code. > [@david1234](#): > > I > and there isn’t a “format” \ default code? There are probably ways to reset the locking to factory default, but I doubt that you will get a recipe for that here. That would make the locking pretty useless, wouldn’t it? This sounds like a warranty RMA to me. But I am not Sierra… ---
**Author:** ![david1234](https://avatars.discourse-cdn.com/v4/letter/d/c67d28/32.png) [@david1234](https://forum.sierrawireless.com/u/david1234)\ **Post date:** [August 22, 2012, 12:19pm UTC](https://forum.sierrawireless.com/t/restore-default-setting/5778/11 "2012-08-22T12:19:42Z")
Thanks ,