How to downgrade device zc550kl,without help of laptop or PC ,?

[kishore_ghubade]

Please tell us some basic information before asking for help:
Model Name:ZC550KL,Z010D
Firmware Version:13.8.26.80
Rooted or not: 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 · Accepted solution]

Hi there, kindly mention to which firmware version you want to downgrade and from which firmware version, so that we can help you better.

[Mehar]

I have max Pro m2 with Android 10 version .424 right now I want to install Android 9 version .094 please Advise how re install Android 9

[kishore_ghubade · Accepted solution]

Device is Z010D,ZC550KL,2016 ,
3gb ram,32Rom device
Built no.13.8.26.80
I want dawngrade to 13.8.26.56.

[kishore_ghubade]

See details screenshots



Please give details.