# MC7455 RMA Reset Issue **URL:** \ **Category:** MC/EM Series\ **Created:** [October 29, 2018, 4:25pm UTC](https://forum.sierrawireless.com/t/mc7455-rma-reset-issue/14308 "2018-10-29T16:25:32Z")\ **Posts on this page:** 9\ **Page:** 1
**Author:** ![vikashj](https://avatars.discourse-cdn.com/v4/letter/v/3be4f8/32.png) [@vikashj](https://forum.sierrawireless.com/u/vikashj)\ **Post date:** [October 29, 2018, 4:25pm UTC](https://forum.sierrawireless.com/t/mc7455-rma-reset-issue/14308/1 "2018-10-29T16:25:32Z")
We are using MC7455, for some of our test we had to do RMA reset of the device. After RMA RESET we see that device fallback to GENERIC image instead of Verizon image. Hence test are failing. How do we make the verizon image persistent? Why is it falling back to GENERIC image? Do we need to enable any setting? AT!ENTERCND=“A710” at!RMARESET=1 at!reset AT!IMPREF? AT!IMPREF? !IMPREF: preferred fw version: 02.30.01.01 preferred carrier name: VERIZON preferred config name: VERIZON\_002.052\_000 current fw version: 02.30.01.01 current carrier name: VERIZON current config name: VERIZON\_002.052\_000 At!IMAGE? At!IMAGE? TYPE SLOT STATUS LRU FAILURES UNIQUE\_ID BUILD\_ID FW 1 GOOD 4 0 0 ?_? 02.08.02.00_? FW 2 GOOD 1 0 0 ?_? 02.24.05.06_? FW 3 GOOD 1 0 0 ?_? 02.14.03.02_? FW 4 GOOD 5 0 0 ?_? 02.30.01.01_? Max FW images: 4 Active FW image is at slot 4 TYPE SLOT STATUS LRU FAILURES UNIQUE\_ID BUILD\_ID PRI FF GOOD 0 0 0 002.009\_001 02.08.02.00\_ATT PRI FF GOOD 0 0 0 002.007\_001 02.08.02.00\_GENERIC PRI FF GOOD 0 0 0 002.012\_001 02.14.03.02\_SPRINT PRI FF GOOD 0 0 0 002.052\_000 02.30.01.01\_VERIZON Max PRI images: 50 ---
**Author:** ![jleitner](https://avatars.discourse-cdn.com/v4/letter/j/a9adbd/32.png) [@jleitner](https://forum.sierrawireless.com/u/jleitner)\ **Post date:** [October 30, 2018, 1:07am UTC](https://forum.sierrawireless.com/t/mc7455-rma-reset-issue/14308/2 "2018-10-30T01:07:19Z")
Hello, The AT!RMARESET=1 will set the module reset to the default SKU configuration as it came out of the factory. You will then need to set the Verizon image using AT!IMPREF=“VERIZON” Jon ---
**Author:** ![vikashj](https://avatars.discourse-cdn.com/v4/letter/v/3be4f8/32.png) [@vikashj](https://forum.sierrawireless.com/u/vikashj)\ **Post date:** [November 1, 2018, 4:27am UTC](https://forum.sierrawireless.com/t/mc7455-rma-reset-issue/14308/3 "2018-11-01T04:27:25Z")
Thanks for the reply, that clarifies why its going to Generic Image. For Verizon certification, we have requirement for doing RMA Reset of the device so that all inbuilt profiles are re-populated. But when we do RMARESET, image always fallback to GENERIC, hence test will fail. We also see that even the Verizon FW which was uploaded gets deleted. Hence, we would need a workaround to get away with this problem. Any ideas/suggestion? ---
**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:** [November 1, 2018, 7:43am UTC](https://forum.sierrawireless.com/t/mc7455-rma-reset-issue/14308/4 "2018-11-01T07:43:36Z")
@vikashj, I am not aware of a requirement to perform an ‘RMA reset’ in Verizon certification. Verizon is not really aware of this mechanism. The easiest way (possibly) would be to reload the Verizon PRI file for the approved version you currently have on the unit (assuming you are currently running a Verizon approved firmware). Alternatively order a Verizon unit from us then its default state would be Verizon (I guess). Regards Matt ---
**Author:** ![jleitner](https://avatars.discourse-cdn.com/v4/letter/j/a9adbd/32.png) [@jleitner](https://forum.sierrawireless.com/u/jleitner)\ **Post date:** [November 3, 2018, 2:31am UTC](https://forum.sierrawireless.com/t/mc7455-rma-reset-issue/14308/5 "2018-11-03T02:31:42Z")
Verizon does have a requirement for factory reset of the module but this should only be required testing at the certified Verizon lab (7 Layers, Intertek, PC Test, etc.). All the labs should have the Sierra Wireless released EM/MC7455 Lab Support Manual that they need to follow for setting the module for testing. I looked into the latest lab support manual and you should no longer need to issue AT!RMARESET. There is an unpublished AT command that is use for the carrier reset in order to perform the Motive and OTADM testing. Which lab are you using? Are you working with a direct account manager here at Sierra Wireless? Or, are you working with a distributor? Jon ---
**Author:** ![vikashj](https://avatars.discourse-cdn.com/v4/letter/v/3be4f8/32.png) [@vikashj](https://forum.sierrawireless.com/u/vikashj)\ **Post date:** [November 3, 2018, 10:50am UTC](https://forum.sierrawireless.com/t/mc7455-rma-reset-issue/14308/6 "2018-11-03T10:50:00Z")
We are using SGS lab and from test cases (OTADM) we inferred that RMA reset would be required. Hence the question. We are not using Verizon unit from Sierra, all unit comes with generic and based on customer requirement we upgrade FW to Verizon/ATT etc. Is it possible to share the unpublished AT command for Carrier Reset? We can give it a try. We do have extended AT command manual, but didn’t find anything. ---
**Author:** ![jleitner](https://avatars.discourse-cdn.com/v4/letter/j/a9adbd/32.png) [@jleitner](https://forum.sierrawireless.com/u/jleitner)\ **Post date:** [November 6, 2018, 5:15pm UTC](https://forum.sierrawireless.com/t/mc7455-rma-reset-issue/14308/7 "2018-11-06T17:15:33Z")
You should not need me to provide you any unpublished AT commands as I know the SGS Labs well and they should have the Lab Support Manual. Are you working with the SGS Labs in San Diego? I can provide you this command but first you should bring the lab engineer into this discussion. Also, are you working with a North American-based distributor? Or, are you a direct Sierra Wireless account? ---
**Author:** ![vikashj](https://avatars.discourse-cdn.com/v4/letter/v/3be4f8/32.png) [@vikashj](https://forum.sierrawireless.com/u/vikashj)\ **Post date:** [November 12, 2018, 10:45am UTC](https://forum.sierrawireless.com/t/mc7455-rma-reset-issue/14308/8 "2018-11-12T10:45:38Z")
Thanks I will check and get back with SGS engineer on same. Thanks for your help. ---
**Author:** ![ashishkamble005](https://avatars.discourse-cdn.com/v4/letter/a/13edae/32.png) [@ashishkamble005](https://forum.sierrawireless.com/u/ashishkamble005)\ **Post date:** [November 7, 2022, 11:52am UTC](https://forum.sierrawireless.com/t/mc7455-rma-reset-issue/14308/9 "2022-11-07T11:52:09Z")
Hello @jleitner In the case of RC76XX modules, when we install a new carrier config with a firmware version newer than the factory installed. The original firmware gets overwritten by the new firmware. 1. After that, by chance, if we do RMA reset, the device tends to load factory-installed firmware and PRI, which in turn the device into LOW POWER MODE (LPM) 2. Also when we try to select the old PRI which has no supported firmware, the device turns into LPM. Is this a known issue in RC7XX modules?