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

kishore.ghubade

Please tell us some basic information before asking for help:

1. Model Name:ZC550KL,Z010D
2. Firmware Version:13.8.26.80
3. Rooted or not: not
4. Frequency of Occurrence:-
5. 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 mention to which firmware version you want to downgrade and from which firmware version, so that we can help you better.

kishore.ghubade

Device is Z010D,ZC550KL,2016 ,

3gb ram,32Rom device

Built no.13.8.26.80

I want dawngrade to 13.8.26.56.

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

See details screenshots

Please give details.