I did factory reset, thereafter I can't use 1:3 ratio split (it's only 50-50 screen now)

[vikramaditya978]

Please tell us some basic information before asking for help:
Model Name:Max Pro M1
Firmware Version:
Rooted or not:
Frequency of Occurrence:
APP Name & APP Version (If your issue relates to the app):
In addition to information above, please also provide as much details as you can, e.g., using scenario, what troubleshooting you've already done, screenshot, etc.
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[victor010]

Hi there, kindly help us with the firmware version of your device and elaborate more on your concern, if possible kindly attach a screenshot to understand better.