Lenovo tb2-x30f TWRP v2.8.7.0 advanced wipe mistake

[N3bula404]

after rooting my lenovo tb2-x30f with adb i needed to wipe my tablet (because i installed xposed framework incorrectly) but i mistakenly clicked advanced wipe and wiped the system so it says "no OS installed, are you sure you want to reboot", so i browsed the internet for a way of fixing this: i found two options, to install a custom rom or to restore from a backup (as you cannot flash the stock rom- i tried). seeing as i did not have a backup i attempted to sideload an unofficial lineageOS rom for my tablet with adb sideloader (using the adb sideload option on TWRP as this was my only choice), this installed to approximately 62% and then said "total xfer: 1.34x", my tablet rebooted to a black screen but sounds playing as i lock/unlock the device and increase/decrease the volume. how do i get my tablet running normally again? is that even possible anymore?