Try Frija. Its an app on windows that let's you download firmwares.
Your warranty is now void. * We are not responsible for bricked devices, dead SD cards, * thermonuclear war, or you getting fired because the alarm app failed. Please * do some research if you have any concerns about flashing this ROM * before flashing it! YOU are choosing to make these modifications, and if * you point the finger at us for messing up your device, we will laugh at you. HARD!
Check out the latest projects on our Telegram group, where we share our advancement on new things and try to help as best as we can. For anything already released, please ask here in XDA