The LG K30 (aka X410UM OR LMX410UM) from Xfinity Mobile will get the Android 8.1 Oreo Update soon.
LG released the v10d software update for the Xfinity Mobile LG K30 X410UM on August 20, 2018. The v10d is the last Android N 7.0 Update with the July Security Patch and the next update is V20a or v20b which brings the Android 8.1 Oreo Update.
Here you can download Xfinity Mobile LG K30 X410UM Stock firmware [Android Nought]
IMEI:353694090010771
Model: LMX410UM
Suffix: ACSTOP
Buyer: CST
Software Version: X410UM10D_01
OS Version: NMR2 Android N
File Name: X410UM10d_01_0727.kdz
KDZ File size: 2063790640
http://pkg02.lime.gdms.lge.com/dn/downloader.dev?fileKey=FWD0SDJ1A2RCA6A018090PU/X410UM10d_01_0727.kdz
LG will soon release the Android Oreo 8.1 kdz firmware for the Xfinity Mobile LG K30 X410UM, We will share with you when it is available for download.
Stay Tuned.