BLU R1 HD (p6601) for /e/OS-Nougat 0.21
e-0.21-n-20250630-UNOFFICIAL-p6601.zip
https://sourceforge.net/projects/eosbuildsronnz98/files/OtherSmartphones/e-0.21-n-20250630-UNOFFICIAL-p6601.zip/download
Please see sources and install instructions including recovery here:
https://xdaforums.com/t/2017-10-23-7-1-2-lineageos-14-1.3689435/
Use it at your own risk!
Please support the developer(s)!