risky po iroot ang Android 6. pero kung gusto mo talaga boss at may backups ka na. try mo to.
Wala po akong kasalanan kung ma bootloop ka.
ikaw na bahala umintindi sa instructions ko. peace

Download mo to: PC mode
* All-in-one toolkit.
* Latest UpdateSu.zip for Android 6.
sa website ng SU sir my available.
*CM j2 adb drivers.
Steps.
Copy UpdateSu.zip for Android 6 sa sdcard pagka tapos insert sa phone ulit.
On USB debugging sa phone.
Open All-in-one toolkit.
Connect Usb
wait mo ma read ang cp mo.
then install TWRP/CWM/PHILWIZ.
Reboot Recovery.
Pag successful ang installation ng custom recovery,
install .zip from Sdcard
hanapin mo yung UpdateSu.zip. then install.
clear data/cache (optional)
first boot matagal talaga. pero pag 1day na ang booting. bootloop na yan sir. XD
Wala po akong kasalanan kung ma bootloop ka or Hardbrick ang phone mo. own decision mo yan boss. CM1 phone ko with Android 6 update, rooted na.