I’ll echo the previous speaker’s question.
What does the T203 BIOS change?
The folder description says “note-code-update” - what does it refer to?
The GTi15-T203-code-update-Use-USB-to-flash-BIOS-docx1.docx file doesn’t contain any version-related information.
Similarly, the GTi15T203_rom.zip file lacks a readme file, for example.