Which firmware for my Lem7

I have a few Questions before i update my watch,

which Firmware is for my watch lem7?

is this the old Modell for Firmware 2.4 or 2.5?

why did the ota update not find any new Firmware.

my watch has Android 7.1.1  and seurity patch from 5.2018  is this a new modell

thanks for your help

Oct 2, 2018 17:40:51 GMT 1 ernst said:

I have a few Questions before i update my watch,

which Firmware is for my watch lem7?

is this the old Modell for Firmware 2.4 or 2.5?

why did the ota update not find any new Firmware.

my watch has Android 7.1.1 and seurity patch from 5.2018 is this a new modell

thanks for your help


Last is 2.5 on this forum.

Oct 2, 2018 19:03:24 GMT 1 ricktop said:
Oct 2, 2018 17:40:51 GMT 1 ernst said:

which Firmware is for my watch lem7?

is this the old Modell for Firmware 2.4 or 2.5?

my watch has Android 7.1.1  and seurity patch from 5.2018  is this a new modell


Last is 2.5 on this forum.

are you sure? i read here that LEM7 have another submodel/revision with NEW/FW_incompatible LCD, with NHH in FW name, 

although ernst not have NHH in FW name, is strange that have newer security patch (2018/05) than i in FW2.5 (2017/07), also have Android 7.1.1 and FW2.5 is Android 7.0

edit: and have newer kernel 4.4.22 i have in FW2.5 3.18.25… and FW name Z28S-LEM7-V1.1, i have Z28-LEM7-V2.5

pablo11 ? please, have any information what is this FW? another/third LEM7 model? or is this numbered from V1 because of Android7.1.1+Linux4.4 and is for older Non-NHH-LCD model? i like this in my THOR4 which is compatible only with older LEM7 :slight_smile:

Everything is here : /thread/2368/lemfo-lem7-official-firmware-27
But if you don’t have issues, just stay with your FW.

DO NOT flash this watch with any other firmware. It’s a new version we had never seen before.

It has a different build number and a much newer kernel version (4.4 vs the original 3.18).

We will try to get the firmware for it.

However, if you want, contact me and I will help you extract the firmware from your watch with SP Flash Tools in case we can’t get our hands on it. 

Oct 3, 2018 18:58:34 GMT 1 iscle said:
DO NOT flash this watch with any other firmware. It's a new version we had never seen before.

It has a different build number and a much newer kernel version (4.4 vs the original 3.18).

We will try to get the firmware for it.

However, if you want, contact me and I will help you extract the firmware from your watch with SP Flash Tools in case we can’t get our hands on it.


Hopefully 4.4 utilises BT LE for better battery life when connected to wiiwatch which mine doesn’t seem to. BT is the biggest drain. I hope you can get it, I’m up for experimenting with it!

Oct 3, 2018 12:57:14 GMT 1 ricktop said:
Everything is here : /thread/2368/lemfo-lem7-official-firmware-27 But if you don't have issues, just stay with your FW.

no everything, on this link is not mentioned this Z28S-LEM7, only clasic Z28-LEM7 and second LCD version Z28-LEM7-NHH ;-)
Oct 3, 2018 18:58:34 GMT 1 iscle said:
DO NOT flash this watch with any other firmware. It's a new version we had never seen before.

It has a different build number and a much newer kernel version (4.4 vs the original 3.18).

We will try to get the firmware for it.

However, if you want, contact me and I will help you extract the firmware from your watch with SP Flash Tools in case we can’t get our hands on it. 


i hope this FW version with newer Android, newer kernel and newer security patches will be compatible with clasicc LEM7/THOR4 :wink:
Oct 2, 2018 17:40:51 GMT 1 ernst said:

my watch has Android 7.1.1  and seurity patch from 5.2018  is this a new modell


can you please dump FW from your Watch? thanks ;-)
Oct 3, 2018 23:21:05 GMT 1 k3dAR said:
Oct 3, 2018 18:58:34 GMT 1 iscle said:
DO NOT flash this watch with any other firmware. It's a new version we had never seen before.

It has a different build number and a much newer kernel version (4.4 vs the original 3.18).

We will try to get the firmware for it.

However, if you want, contact me and I will help you extract the firmware from your watch with SP Flash Tools in case we can’t get our hands on it.


i hope this FW version with newer Android, newer kernel and newer security patches will be compatible with clasicc LEM7/THOR4 :wink:

It won’t be :confused:

Hello together aim new here (from germany)
I bought an lem7 an my watch have
Z28S-LEM7-V1.1 with 4.4.22 kernel run on android 7.1.1 too.
I can’t find any information about this…
If there any news?

Nov 1, 2018 11:45:34 GMT 1 robulex said:
Hello together aim new here (from germany) I bought an lem7 an my watch have Z28S-LEM7-V1.1 with 4.4.22 kernel run on android 7.1.1 too. I can't find any information about this.... If there any news?

i think yours is up to date but you can check if you have ota updates. i think maybe i've seen somewhere v1.2 but not sure.

be careful there are two types of lem7 yours is the newer version.

The unit i received this week is Z28S-LEM7-V1.2

So yes there is a newer version. Think i have an issue with the LTE connectivity and i recommend you follow the LTE Issues discussion.

Thanks for the quick replay

I try the last days to update the watch but the only information I became is that my version is the newest…

Nov 1, 2018 12:09:01 GMT 1 soniasophie9697 said:

Nov 1, 2018 11:45:34 GMT 1 robulex said:
Hello together aim new here (from germany)
I bought an lem7 an my watch have
Z28S-LEM7-V1.1 with 4.4.22 kernel run on android 7.1.1 too.
I can’t find any information about this…
If there any news?

i think yours is up to date but you can check if you have ota updates. i think maybe i’ve seen somewhere v1.2 but not sure.

be careful there are two types of lem7 yours is the newer version.


I’ve bought a LEMFO LEM 7 from Aliexpress 4 days ago that have the version Z28S-LEM7-V1.2 and kernel 4.4.22
I’vetried to flash watch mistakenly by Z28-LEM7-V2.5 but couldn’t…
Then popup appears it has M6739 processor in stead of M6737…mismatch
So I quitted firmwire upgrad…

Nov 27, 2018 14:45:46 GMT 1 sakib2212 said:
I've bought a LEMFO LEM 7 from Aliexpress 4 days ago that have the version Z28S-LEM7-V1.2 and kernel 4.4.22 I'vetried to flash watch mistakenly by Z28-LEM7-V2.5 but couldn't.... Then popup appears it has M6739 processor in stead of M6737....mismatch So I quitted firmwire upgrad....

no worries just flash back the right firmware.