Couldn't update to /e/OS 3.1.4

[piero]

@piero

1. What was the android version of the StockOS installed before /e/ ?

@Marine

my phone was running android 12 but I had to downgrade it to android 11

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@piero

2. What is the latest available StockOS android version but not higher regarding to the android version of the /e/OS build you want to install ?
   Or what is the precise StockOS version required as a base to install the /e/OS build you want to install

@Marine

I don’t understand question 2 sorry

according to Install /e/OS on a Samsung Galaxy S10e - “beyond0lte” :

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@piero

3. does latest /e/ build include the upgraded needed parts of the firmware ?

so : yes.

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@piero

4. does Lineage wiki offer a firmware upgrade solution for this device ?

Update firmware on beyond0lte | LineageOS Wiki

so yes, but uneeded because answer to question (3) is yes.

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@Marine

Do you have any idea if I can do what you call the dirty upgrade?

CONCLUSION :
because anxwer to question (3) is yes you can proceed without specificaly prior installing stockOS or firmware parts as they are included