ram and rom drop after flashing Xiaomi Hyper OS redmi13c

[tytt32]

Hi!
I have bought a second hand Xiaomi Redmi 13C (23106rn0da) with 256 GB of ROM and 8 GB of RAM.
I had read in the specifications of the phone, before buying it, that it has NFC. But I couldn't save my bank cards on Google Wallet. After reading several forums I concluded, perhaps wrongly, that the problem came from the ROM which was global and not European. I don't know anything about it, and I spent two days watching tutorials and trying to change my ROM to an EEA version. Once the operation was successful with HyperOs Xiaomi, I noticed that the settings of my phone displayed 128 GB of ROM (vs. 256 before with MIUI) and 4 GB of RAM (vs. 8 before with MIUI)
Do you know how I could at least recover my rom and ram?? Oo
Not to mention that I still don't have NFC :/
I also tried when in doubt to put the global hyperOS rather than EEA but the problem is the same...
Thank you so much in advance for your help!

 

[gogocar62]

NFC support depends on HW. If the device doesn't support it no ROMs will change it.

 

[tytt32]

thank you very much for the response!
but do you know how I could at least recover my rom and ram?

 

[tytt32]

up?

 

[JiaiJ]

Keep in mind it is a custom ROM forum, not a general support forum.

I guess you would have to install the ROM matching the origin of your phone : https://miuirom.org/phones/redmi-13c

 

[tytt32]

I already did it but I didn't get back my old ram and rom levels. Does anyboby knows why a rom flashing lowered my ram and rom forever?