# OTAA - save Keys and?

**URL:** <https://www.thethingsnetwork.org/forum/t/otaa-save-keys-and/13183>\
**Category:** End Devices (Nodes)\
**Created:** [March 19, 2018, 5:29pm UTC](https://www.thethingsnetwork.org/forum/t/otaa-save-keys-and/13183 "2018-03-19T17:29:24Z")\
**Posts on this page:** 7\
**Page:** 1

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**Author:** ![NN3694](https://www.thethingsnetwork.org/forum/letter_avatar_proxy/v4/letter/n/22d042/32.png) [@NN3694](https://www.thethingsnetwork.org/forum/u/NN3694)\
**Post date:** [March 19, 2018, 5:29pm UTC](https://www.thethingsnetwork.org/forum/t/otaa-save-keys-and/13183/1 "2018-03-19T17:29:24Z")

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Hi,

I use the node (MURATA) with OTAA. When I go to reset with MCU I do not want to make a activation again and again before eache transmit new data. When my node is once activated - I do not want to make a activation procedure again.

So I saved the NwkSKey and AppSkey and always after restarting my MCU I read the keys from EEPROM (LoRaMacNwkSKey and LoRaMacAppSKey). But it seems like that I have to save also some other things, because I can not transmit data to the server after restart… (although the keys stored properly!!)

Missed I something?

Thank you.

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**Author:** ![BoRRoZ](https://www.thethingsnetwork.org/forum/user_avatar/www.thethingsnetwork.org/borroz/32/44234_2.png) [@BoRRoZ](https://www.thethingsnetwork.org/forum/u/BoRRoZ)\
**Post date:** [March 19, 2018, 5:35pm UTC](https://www.thethingsnetwork.org/forum/t/otaa-save-keys-and/13183/2 "2018-03-19T17:35:18Z")

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what node is that ? did you build it yourself or bought it.

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**Author:** ![arjanvanb](https://www.thethingsnetwork.org/forum/user_avatar/www.thethingsnetwork.org/arjanvanb/32/46626_2.png) [@arjanvanb](https://www.thethingsnetwork.org/forum/u/arjanvanb)\
**Post date:** [March 19, 2018, 5:40pm UTC](https://www.thethingsnetwork.org/forum/t/otaa-save-keys-and/13183/3 "2018-03-19T17:40:16Z")

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See [OTAA then ABP](https://www.thethingsnetwork.org/forum/t/otaa-then-abp/12377/5), and [Turning off RN2483 resets up/down frames](https://www.thethingsnetwork.org/forum/t/turning-off-rn2483-resets-up-down-frames/2871/20).

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**Author:** ![NN3694](https://www.thethingsnetwork.org/forum/letter_avatar_proxy/v4/letter/n/22d042/32.png) [@NN3694](https://www.thethingsnetwork.org/forum/u/NN3694)\
**Post date:** [March 19, 2018, 5:50pm UTC](https://www.thethingsnetwork.org/forum/t/otaa-save-keys-and/13183/4 "2018-03-19T17:50:23Z")

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I built my own node, but it is based on MURATA LRWAN module.  
Oops…It looks like I forget save the DevAdr… I will try to save it too.

Thank you

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**Author:** ![arjanvanb](https://www.thethingsnetwork.org/forum/user_avatar/www.thethingsnetwork.org/arjanvanb/32/46626_2.png) [@arjanvanb](https://www.thethingsnetwork.org/forum/u/arjanvanb)\
**Post date:** [March 19, 2018, 5:51pm UTC](https://www.thethingsnetwork.org/forum/t/otaa-save-keys-and/13183/5 "2018-03-19T17:51:45Z")

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Just the keys plus DevAddr is still not sufficient!

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**Author:** ![NN3694](https://www.thethingsnetwork.org/forum/letter_avatar_proxy/v4/letter/n/22d042/32.png) [@NN3694](https://www.thethingsnetwork.org/forum/u/NN3694)\
**Post date:** [March 19, 2018, 5:55pm UTC](https://www.thethingsnetwork.org/forum/t/otaa-save-keys-and/13183/6 "2018-03-19T17:55:41Z")

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KEys, DevAddr and frame counters?

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**Author:** ![arjanvanb](https://www.thethingsnetwork.org/forum/user_avatar/www.thethingsnetwork.org/arjanvanb/32/46626_2.png) [@arjanvanb](https://www.thethingsnetwork.org/forum/u/arjanvanb)\
**Post date:** [March 19, 2018, 7:02pm UTC](https://www.thethingsnetwork.org/forum/t/otaa-save-keys-and/13183/7 "2018-03-19T19:02:04Z")

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Well, no. See the links I posted above.