# MC8705 Boots with +CFUN=0 **URL:** \ **Category:** MC/EM Series\ **Created:** [July 6, 2018, 3:00am UTC](https://forum.sierrawireless.com/t/mc8705-boots-with-cfun-0/13078 "2018-07-06T03:00:44Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![rhcriad](https://avatars.discourse-cdn.com/v4/letter/r/ecccb3/32.png) [@rhcriad](https://forum.sierrawireless.com/u/rhcriad)\ **Post date:** [July 6, 2018, 3:00am UTC](https://forum.sierrawireless.com/t/mc8705-boots-with-cfun-0/13078/1 "2018-07-06T03:00:44Z")
Hi, I have a substantial quantity of MC8705 modules (about 300) that have been sitting in stock for what I assume may be years (Firmware Revision: T1\_0\_3\_2AP R361 CNSZXD00000061 2011/04/15 17:40:48). These get installed into a carrier board running embedded Linux. Of the 10 modules I have checked so far, all of them seem to start up disabled (i.e. AT+CFUN? returns +CFUN: 0) before a manual disable/re-enable of the modem’s power supply rail or by manually setting +CFUN to “1”. I have tried upgrading to a newer version firmware using the **T3.5-Release11-T3\_5\_6\_7bt-T3\_5\_6\_7ap.exe** one-click tool but to no avail. I am comparing these modules to some test cards that I have been using for years without any problems. These test cards have firmware **T3\_5\_6\_7AP R813 CNSHZ-ED-XP0031 2014/11/10 18:11:43**. I need these modules to boot enabled and do not want to have to send a command in order to do this. Has anyone else observed an issue like this? Or is it likely there is some hardware updates between then (back in 2011) and now that would result in behaviour like this? Thanks. ---
**Author:** ![rhcriad](https://avatars.discourse-cdn.com/v4/letter/r/ecccb3/32.png) [@rhcriad](https://forum.sierrawireless.com/u/rhcriad)\ **Post date:** [July 6, 2018, 3:03am UTC](https://forum.sierrawireless.com/t/mc8705-boots-with-cfun-0/13078/2 "2018-07-06T03:03:15Z")
Some additional info of one of these disabled modems: Manufacturer: Sierra Wireless, Incorporated Model: MC8705 Revision: T1\_0\_3\_2AP R361 CNSZXD00000061 2011/04/15 17:40:48 IMEI: 353567043449967 IMEI SV: 2 FSN: CC31585396310 3GPP Release 7 ## +GCAP: +CGSM,+DS,+ES AT!GSTATUS? !GSTATUS: Current Time: 29 Temperature: 30 Bootup Time: 1 Mode: LOW POWER MODE System mode: WCDMA PS state: Not attached WCDMA band: IMT2000 GSM band: Unknown WCDMA channel: 10700 GSM channel: 65535 GMM (PS) state:NULL — MM (CS) state: NULL — WCDMA L1 State:L1M\_STOPPED RRC State: DISCONNECTED ## RX level (dBm):-55 (Not updated) AT+CFUN? +CFUN: 0 ## OK AT+CSQ +CSQ: 99,99 OK ---
**Author:** ![mlw](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.sierrawireless.com/mlw/32/3706_2.png) [@mlw](https://forum.sierrawireless.com/u/mlw)\ **Post date:** [July 6, 2018, 11:37am UTC](https://forum.sierrawireless.com/t/mc8705-boots-with-cfun-0/13078/3 "2018-07-06T11:37:48Z")
Hi, No the age is not going to be setting them to cfun 0, this is going to bean NV setting somewhere. So just to be clear when you sent at+cfun=1 they work as expected but then when you power cycle them they run up in cfun=0 mode again? Regards Matt ---
**Author:** ![rhcriad](https://avatars.discourse-cdn.com/v4/letter/r/ecccb3/32.png) [@rhcriad](https://forum.sierrawireless.com/u/rhcriad)\ **Post date:** [July 9, 2018, 12:46am UTC](https://forum.sierrawireless.com/t/mc8705-boots-with-cfun-0/13078/4 "2018-07-09T00:46:57Z")
Hi Matt, Thanks for your reply. Yes, that is correct. Setting the AT+CFUN=1, they behave as expected but yes, when we power cycle, they start up with CFUN=0 again. One thing we did notice was the difference in customisation settings stored on both a working and non-working modem: Working modem: !CUSTOM: ``` PUKPRMPT 0x01 MEPCODE 0x01 ISVOICEN 0x02 PRLREGION 0x01 PCSCDISABLE 0x03 GPSENABLE 0x01 ``` Faulty modem: !CUSTOM: ``` NOROAM 0x01 PUKPRMPT 0x01 MEPCODE 0x01 ISVOICEN 0x02 PRLREGION 0x02 PCSCDISABLE 0x03 DISFDNPDPCHK 0x03 GPSENABLE 0x01 STARTLPM 0x01 GPSLPM 0x011 ``` Is it possible the “STARTLPM” value could be the cause of this? And do we need a password to set these values? Thanks, Richard. ---
**Author:** ![lotam](https://avatars.discourse-cdn.com/v4/letter/l/958977/32.png) [@lotam](https://forum.sierrawireless.com/u/lotam)\ **Post date:** [July 9, 2018, 3:19am UTC](https://forum.sierrawireless.com/t/mc8705-boots-with-cfun-0/13078/5 "2018-07-09T03:19:23Z")
Can you try below? > AT!ENTERCND=“A710” > AT!CUSTOM=“STARTLPM”,0 > AT!RESET ---
**Author:** ![rhcriad](https://avatars.discourse-cdn.com/v4/letter/r/ecccb3/32.png) [@rhcriad](https://forum.sierrawireless.com/u/rhcriad)\ **Post date:** [July 9, 2018, 3:47am UTC](https://forum.sierrawireless.com/t/mc8705-boots-with-cfun-0/13078/6 "2018-07-09T03:47:34Z")
Hi, Yes that fixes it! Thank you very much! Richard. ---
**Author:** ![mlw](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.sierrawireless.com/mlw/32/3706_2.png) [@mlw](https://forum.sierrawireless.com/u/mlw)\ **Post date:** [July 9, 2018, 6:51am UTC](https://forum.sierrawireless.com/t/mc8705-boots-with-cfun-0/13078/7 "2018-07-09T06:51:10Z")
Richard, Yes this is the problem, it is defined as follows. “STARTLPM”—Enable/disable LPM (Low Power Mode) as the startup mode for the user equipment. : • 0 = Disabled • 1 = Enabled (start UE in LPM) To turn it off send the following ``` at!entercnd="A710" at!custom=0,"STARTLPM" at!reset ``` Regards Matt