My Samsung Galaxy J5 (2017) aka j5y17lte with lineage os

In the last weeks i did some tests with installing custom ROMs to my old devices:

• Samsung A3 with lineage

and

• Google Nexus 7 (2017) with lineage

The next step was to try this with my Samsung J5:

root@zerberus:~/bin# ./heimdall print-pit
Heimdall v1.4.2

Copyright (c) 2010-2017 Benjamin Dobell, Glass Echidna
http://www.glassechidna.com.au/

This software is provided free of charge. Copying and redistribution is
encouraged.

If you appreciate this software and you would like to support future
development please consider donating:
http://www.glassechidna.com.au/donate/

Initialising connection...
Detecting device...
Claiming interface...
Setting up interface...

Initialising protocol...
Protocol initialisation successful.

Beginning session...

Some devices may take up to 2 minutes to respond.
Please be patient!

Session begun.

Downloading device's PIT file...
PIT file download successful.

Entry Count: 29
Unknown 1: 1598902083
Unknown 2: 844251476
[.....]
File Size (Obsolete): 0
Partition Name: USERDATA
Flash Filename: userdata.img
FOTA Filename: remained

Ending session...
Rebooting device...
Releasing device interface...

But for the next step (flashing the boatloader with TWRP) i got the follwoing error:

root@zerberus:~/bin# ./heimdall flash --RECOVERY ../Downloads/twrp-3.3.1-1-j5nlte.img --no-reboot
Heimdall v1.4.2

Copyright (c) 2010-2017 Benjamin Dobell, Glass Echidna
http://www.glassechidna.com.au/

This software is provided free of charge. Copying and redistribution is
encouraged.

If you appreciate this software and you would like to support future
development please consider donating:
http://www.glassechidna.com.au/donate/

Initialising connection...
Detecting device...
Claiming interface...
Setting up interface...

Initialising protocol...
Protocol initialisation successful.

Beginning session...

Some devices may take up to 2 minutes to respond.
Please be patient!

Session begun.

Downloading device's PIT file...
PIT file download successful.

Uploading RECOVERY
100%
RECOVERY upload successful

Ending session...
ERROR: Failed to receive session end confirmation!
Releasing device interface...

The smartphone showed this:

  

RMM STATE: Prenormal

KG STATE: Checking

Only official released binaries are allowed to be flashed(RECOVERY)

KG = Knox Guard
RMM = Remote Monitoring and Management
(https://chimeratool.com/fr/docs/samsung-knox-guard-kg-and-remote-monitoring-and-management-rmm-unlock-functions)

I found a solution for this problem (https://www.android-hilfe.de/forum/root-custom-roms-modding-fuer-samsung-galaxy-s9-s9.3273/s9-sm-g960f-nach-android-9-kein-installieren-von-custom-recoverys-moeglich.898725.html): It just says: wait 7 days...

Grrrrr!!!!!!!

And after 7 days:

And then:

 /bin# ./heimdall flash --RECOVERY ../AndroidDevices/TWRP-3.2.3-TwrpBuilder-j5y17lte-2018-09-13_15-34.img  --no-reboot

Heimdall v1.4.2
Copyright (c) 2010-2017 Benjamin Dobell, Glass Echidna
http://www.glassechidna.com.au/

This software is provided free of charge. Copying and redistribution is
encouraged.

If you appreciate this software and you would like to support future
development please consider donating:
http://www.glassechidna.com.au/donate/

Initialising connection...
Detecting device...
Claiming interface...
Setting up interface...

Initialising protocol...
Protocol initialisation successful.

Beginning session...

Some devices may take up to 2 minutes to respond.
Please be patient!

Session begun.

Downloading device's PIT file...
PIT file download successful.

Uploading RECOVERY
100%
RECOVERY upload successful

Ending session...
Releasing device interface...

And after that i was able to install the lineage os plus the Google playstore:

adb sideload ../Downloads/lineage-15.1-20180510-UNOFFICIAL-j5y17lte.zip
adb sideload open_gapps-arm-8.1-j5y17lte-pico-20200418.zip

The only problem:
Only an unofficial lineage version 15.1 was available for the Samsung J5 2017 aka "j5y17lte". I found one build with version 16 but there the WLAN was broken...

So this was a step back from Android 9 to Android 8.1 - but system space moved from 800MB free to 7GB free ;-)