Band selection kill LTE

Lhg lte6. Firmware 6.47. Factory reset.

Quick set. LTE. All OK. Open band setting. Set band 3 (I’m know band exactly) or 3+7+20. Apply. LTE Status: resetting.

Ethernally. Reboot. No lte at all.

Reset to factory. Try again. Cycle. Once I’m set any band - lte killed.