Bios update for Corebook X with i5 8259u

Can I get bios update for Corebook X i5 8259u with 16Gb ram?
I’m hoping it can resolve my issue with battery not recognized on Linux. Some units work just fine but many PPL have that problem under Linux.
I have BIOS version 2.20.1271, on yt I saw some reviewer has 2.20.1275 and on his machine battery is recognized under linux just fine.
@ChuwiService
@Management

Model: CoreBook X
CPU: Intel Core i5-8259U
Device serial: JCorBXIW1H211102356

Current BIOS:
JXX-BI-14.1-WU133ER110-EA90B-072-H
BIOS Revision: 5.13
Firmware Revision: 2.7
Release Date: 11/22/2021

EC Version: EC-Ver-02.07

Linux Mint 22.3 / Ubuntu 24.04 base

The battery is completely absent from:
/sys/class/power_supply/

upower -e only shows:
/org/freedesktop/UPower/devices/DisplayDevice

dmesg reports:
ACPI BIOS Error (bug): Could not resolve symbol
[_SB.PCI0.LPCB.HEC.PENV], AE_NOT_FOUND

Could you provide the correct BIOS/EC firmware for this exact serial number that fixes the ACPI battery/DSDT issue?