Can't boot into recovery mode after flashing TWRP on Samsung Galaxy S5

#Problem I can not boot my Samsung Galaxy S5 into recovery mode after flashing TWRP. #Background I am trying to install LineageOS on my Samsung Galaxy S5 . #What I tried I followed the install guide on the LineageOS wiki: 1. Installing heimdall , which I built from source to get v1.4.2, since the previous version could not complete the handshake with my phone (other people had the same error ) 2. Checking if heimdall works by using

print-pit

, which it did 3. Flashing TWRP by using

flash --RECOVERY twrp-x.x.x-x-klte.img --no-reboot

. Keeping their disclaimer in mind I tried both the current version as well as two older ones. Heimdall outputs

upload successful

, and I disconnect the phone (after the device has been released). 4. Booting into recovery mode -> **FAIL** #Error The device boots into download mode instead (and no, I did not accidentally switch the volume buttons). There is no error message. #Edit I originally (and wrongfully) assumed the device to be Samsung Galaxy S5 LTE . It was, however, a Samsung Galaxy S5 Plus (at least this is how I explain the error).