[librem 14] how to update EC firmware to ec-2021-06-04_ef9fd3c

Hardware
16

This procedure should be done from a Live USB

18

any sane automatic fan control algorithm implements some hysteresis, which helps insulate the fan speeds from sudden changes in CPU temp

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19

fair point.

20

Have the official instructions been released yet?

21

We are working on publishing them on the next few days.

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22

Any news about this? Sorry for the nagging, I am impatient but not enough to risk bricking my laptop :smirk_cat:

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23
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24

Finaly … wohooo … I’ll try tomorrow morning :grinning:

25

I have installed this update and it has worked like a charm! What an amazing improvement to fan noise reduction. My Librem 14 now is as silent as MacBook Pro was!

My complements :heart: :heart: :heart: to @MrChromebox, @nicole.faerber and the rest of the team for all the hard work!

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26

I had one issue in following the EC firmware update steps. The link provided at “Download the Librem-EC firmware update file” seems incorrect (couldn’t be gzip decompressed).

The link that is provided on the page is:

https://source.puri.sm/firmware/releases/-/blob/master/librem_14/ec-2021-08-03_05d9990.rom.gz

The link that works is:

https://source.puri.sm/firmware/releases/-/raw/master/librem_14/ec-2021-08-03_05d9990.rom.gz

Note the blob vs raw in the URLs.

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27

fixed, thx (might take a few for the page to regenerate)

28

In the page https://pureos.net/download/ the button for PureOS 10 will download the version of 5 July, but in the following page there are newer versions (the last is 18 August)
https://downloads.puri.sm/byzantium/gnome/

Is any PureBoot version (17, 17.1, 18) supported with any Librem-EC version?

29

all that matters is that you use PureOS 10 (not 9)

yes, though you’d want to use 17.1 at a minimum since there are ACPI fixes on the coreboot side related to the EC

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30

Many many thanks! Also to @nicole.faerber. The install was super easy and the result is great :smiley_cat:

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31

Hi,
Is this firmware update compatible with librem mini V2? It seems the EC are the same (correct me if I’m wrong)

32

even if ec chip is same, the functionality is per board.
this ec firmware is fo l14 only.
if you try flash it, yopu will simply brick your device.

33

even worse, you could potentially short something / fry your board. And the Librem Mini v1/v2 does not have the Vcc line on the EC flash isolated, so it can’t be externally reflashed without desoldering the pin first

34

Thanks, I’ve successfully updated following https://puri.sm/projects/librem-ec/
(though ROM link on the webpage wasn’t latest and file naming schema change was slightly confusing)

Is it really necessarily to flash the update while booting from live ISO? Can I do it directly from my Debian?

35

it’s safer.
flashing ec does unclean system shutdown. so doing this directly from the regullar runing os is unsafe for data on disk, also runniing services may interupt update which will put you in position when you will have to reach local electronics specialisty to flash it externally as system would be bricked.

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36

Librem-EC is Purism’s fully open-source firmware

I guess Purism should replace this with “FLOSS firmware”, otherwise the FSF will complain.

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