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Xiaomi Redmi 4X : Basebands

Is there any source to finde latest basebands for Xiaomi Redmi 4X ?
And is it possible to flash it ?
Would be interesting to get any with LTE band 20.

Just updated to new global version 8.2.9.0 from 8.2.0.2.
There is also coming a little baseband update with it.
Before is was .2.c8-00006-8940_GEN_PACK-1_V003
and now it is .2.c8-00006-8940_GEN_PACK-1_V042.
Hope that also band 20 for LTE will come once with a standard update, because the hardware should be fine for it.
Would be great for users / customers in central europe around germany esp.

How can I downgrade the baseband? My 4x only has 2g signal

I have Redmi 4X (santoni) and I b20 was working already when I bought it. Now I use Xiaomi.eu MIUI 8 (Android N 7.1.2) and everything works perfectly.

I 've bought redmi 4x Global from GearBest but I don't know if it supports B20.
The box writes:
Product Name / Product Model: Mobile Phone / MAG138
Can someone confirm if it is indeed the global version and supports B20 ?

I am not 100% sure but I read that few times:
If you got english packaging you should have the international Version with band 20....

There are 3 different Versions to buy.
You can see it eg at geekbuying:
Version 1 : Normal 4x with english and chinese Rom - no Band 20
Version 2: Global Rom 4x with Multilanguage Rom - no Band 20
Version 3: Global Version 4x with Multilanguage Rom - including Band 20

tslnox said:
I have Redmi 4X (santoni) and I b20 was working already when I bought it. Now I use Xiaomi.eu MIUI 8 (Android N 7.1.2) and everything works perfectly.
Click to expand...
Click to collapse
Go to your order at the Gearbest shop and click on the link to the phone.
If you see Global version you have B20, as you can see at the specs (4G: FDD-LTE B1/B3/B4/B5/B7/B8/B20)
Confusing part.......If you see the International version then you don't have B20 (4G: FDD-LTE B1/B3/B5/B7/B8)

unlock bans 20
any way to unlock LTE band 800mh - (20) in xiaomi redmi 4x 2g/16 chinese version????
pls help. I bought this phone but havent band 20
(bootloader is unlock and rom is rooted)

I'm following the same question:
is it possible to unlock B20 on any 4X just flashing the right international ROM or
it is necessary to buy a different version of the phone
(i.e. B20 depends on software only or on hardware difference too ???)

Elinx said:
Go to your order at the Gearbest shop and click on the link to the phone.
If you see Global version you have B20, as you can see at the specs (4G: FDD-LTE B1/B3/B4/B5/B7/B8/B20)
Confusing part.......If you see the International version then you don't have B20 (4G: FDD-LTE B1/B3/B5/B7/B8)
Click to expand...
Click to collapse
I didn't buy it from Gearbest, it was from one of Czech e-shops. I wasn't aware of the different HW versions.

I think I'm just going to get the Global version on geekbuying with 3GB RAM, $124.99 is a really good price.

as far as i know the problem is not the modem, but the antenna. it needs a different one. you can try to modify the nvram if you know how to do it. you also need B20 configuration values for that. but maybe it really have other hardware requirements.

For Band 20 (EU, Germany) definitely buy the GLOBAL VERSION, on the box it clearly states Band 20 amongst others
China doesn't use Band 20 for LTE, so it's not supported on the China market phones.

Reading from other phones threads, it's not possible to add band 20 to phones without it.
Who tried modding the phone's reserved system partitions, ended up with a non-working phone modem/radio.
So, you must check the supported bands on the phone before you buy it.

... Following.

https://forum.xda-developers.com/xiaomi-redmi-4x/development/firmwares-t3682965
look at this

Plz sign the petition if you guys want that the kernel sources must be released for redmi 4X https://www.change.org/p/xiaomi-dev...m_medium=copylink&utm_campaign=share_petition

k20 pro vs 9t pro

is there any difference between these two apart from ROM? Will chinese k20 pro NFC work when I flash a custom rom?
asking because will buy one soon, k20 is cheaper but I've seen on gsmarena that k20pro nfc works only in china and that's basically the only thing that would force me to choose it over 9tpro

Different bands pal

sutty86 said:
Different bands pal
Click to expand...
Click to collapse
https://www.gsmarena.com/compare.php3?idPhone1=9791&idPhone2=9708&idPhone3=7769
networks in every country that I've been so far (europe/scandinavia) work well on redmi note 3 which has less band support, should be fine, no?
there's that `NFC (china only)` thing in K20 column, will I be able to use it in europe after flashing a custom rom?

Freaky Dave said:
https://www.gsmarena.com/compare.php3?idPhone1=9791&idPhone2=9708&idPhone3=7769
networks in every country that I've been so far (europe/scandinavia) work well on redmi note 3 which has less band support, should be fine, no?
there's that `NFC (china only)` thing in K20 column, will I be able to use it in europe after flashing a custom rom?
Click to expand...
Click to collapse
You can use it with the Chinese ROM. Not sure where this has come from that it only works in China. The issue is more about tap to pay apps don't work on the Chinese ROM. I know GPay doesn't play with Chinese MIUI, but not sure what else doesn't.
Once you've installed a custom ROM, then it's irrelevant (obviously excluding Indian models) which version of the phone you have. Any fixes required to get financial and tap to pay apps will work on all models with NFC hardware.

Freaky Dave said:
there's that `NFC (china only)` thing in K20 column, will I be able to use it in europe after flashing a custom rom?
Click to expand...
Click to collapse
K20 Pro is released in China and India. Indian model, despite sharing the name, doesn't have NFC.

K20 PRO / Mi9T PRO ROM
I have mine ( K20 PRO ) with Mi9T PRO Global ROM. Everything works fine in, NFC works too.

Is the global Mi 9T Pro with dual band GPS?

OneMinus said:
I have mine ( K20 PRO ) with Mi9T PRO Global ROM. Everything works fine in, NFC works too.
Click to expand...
Click to collapse
the official rom is out ?

Aimara said:
the official rom is out ?
Click to expand...
Click to collapse
Yes.. both official stable global and eea.

Be aware of the differences between the Chinese K20Pro and the Indian.
Chinese: no band 20, no widevine L1 after flashing non stock rom
Indian: no NFC, no band 20, no widevine L1 after flashing non stock rom.
Also there are hardware differences between the K20Pro and the 9T Pro.
Read very well all topics around flashing forward and back from stock to different Rom's and disregarding some don'ts put many here with a bricked or semi-bricked phone!!!

Snah001 said:
Be aware of the differences between the Chinese K20Pro and the Indian.
Chinese: no band 20, no widevine L1 after flashing non stock rom
Indian: no NFC, no band 20, no widevine L1 after flashing non stock rom.
Also there are hardware differences between the K20Pro and the 9T Pro.
Read very well all topics around flashing forward and back from stock to different Rom's and disregarding some don'ts put many here with a bricked or semi-bricked phone!!!
Click to expand...
Click to collapse
The only known hardware difference between all models is that the Indian model does not have the NFC coil. Otherwise they are identical.

Robbo.5000 said:
The only known hardware difference between all models is that the Indian model does not have the NFC coil. Otherwise they are identical.
Click to expand...
Click to collapse
No hardware/software wise band 20 is not there and it is a Qualcomm firmware thingy that blocked band 20 for all K20(Pro).
You can flash any Rom that you want but on as well the Indian as the Chinese K20(Pro) band 20 is not available.

Snah001 said:
No hardware/software wise band 20 is not there and it is a Qualcomm firmware thingy that blocked band 20 for all K20(Pro).
You can flash any Rom that you want but on as well the Indian as the Chinese K20(Pro) band 20 is not available.
Click to expand...
Click to collapse
Yes, but that is firmware, like your say. Physical hardware is the same, it's the firmware (software) controlling it that is different.

Can someone please tell me the difference between EU ROM and Global ROM?

Which one do you think is better between the two? If my ROM before was QJOEUXM and I flashed the QJOMIXM ROM in my RN9, would it make that much difference?

The clue is in the question
One is for devices sold into European markets, the other for Global (non EU, non Chinese) markets
Mine came with the EU version of MIUI 11 - I couldn't install the Global (non EU) version of MIUI 12, but the EU version installed fine. Phones bought in different regions usually have different regional update channels and do it is here
I don't imagine there would be any meaningful difference at all between the versions, but with only one MIUI device I can't compare. Unless you've rooted your phone I'd expect you will only be able to install the one intended for your region
Correct me if I'm wrong, people!

EU devices can NFC

qamu74 said:
EU devices can NFC
Click to expand...
Click to collapse
Check your model number
Mine is M2003J15SG
It's a 4/128gb version, was bought within the EU, runs EU ROMs and has NFC
Pretty sure, as I said above, that the global and Chinese phones have different model numbers and different specs (some versions having no NFC chip) running different stock firmware

Question Switching to global rom - modem files

Hello everyone,
Searched the forums and could not find a definitive info regarding this, apologize in advance if i missed it.
I'm soon to receive my mi 11 ultra china version.
Alltough the bands used by all the carriers in my country are all supported, i've read somewhere on the mi 11 forum that the modem settings for china are different from the global/eu rom ( at least for the mi 11 ).
Wanted to know if i flash the original global/eea rom from xiaomi via the official tool, will i also get the modem configuration from the global/eea rom ? ( Just like the global mi 11 ultra )
Cheers !

Jhonxs said:
Hello everyone,
Searched the forums and could not find a definitive info regarding this, apologize in advance if i missed it.
I'm soon to receive my mi 11 ultra china version.
Alltough the bands used by all the carriers in my country are all supported, i've read somewhere on the mi 11 forum that the modem settings for china are different from the global/eu rom ( at least for the mi 11 ).
Wanted to know if i flash the original global/eea rom from xiaomi via the official tool, will i also get the modem configuration from the global/eea rom ? ( Just like the global mi 11 ultra )
Cheers !
Click to expand...
Click to collapse
i think you can BUT, don NOT lock the BL when you have a cn version running global or EEA.
As far as i know you can flash other versions as long as you keep BL unlocked, or it wil brick and you need EDL

marcel112 said:
i think you can BUT, don NOT lock the BL when you have a cn version running global or EEA.
As far as i know you can flash other versions as long as you keep BL unlocked, or it wil brick and you need EDL
Click to expand...
Click to collapse
You can unbrick now without edl iirc
There is a method on YouTube but I haven't needed to try it yet

When you down load the ZIP document with ROM every week, boot (kernel) & device ... Some instances it is also called modem or baseband (no idea what is the right ... I have Mi4w with miui7 ultimate international builders model.

Jhonxs said:
Hello everyone,
Searched the forums and could not find a definitive info regarding this, apologize in advance if i missed it.
I'm soon to receive my mi 11 ultra china version.
Alltough the bands used by all the carriers in my country are all supported, i've read somewhere on the mi 11 forum that the modem settings for china are different from the global/eu rom ( at least for the mi 11 ).
Wanted to know if i flash the original global/eea rom from xiaomi via the official tool, will i also get the modem configuration from the global/eea rom ? ( Just like the global mi 11 ultra )
Cheers !
Click to expand...
Click to collapse
If you mean the modem configuration like unlock needed bands it won't work.

I am not sure, but I guess it can be done. As far as I know, you can flash other versions after you keep the BL unlocked, I hope it works for you.

I'm on a china model in the US with the global rom installed...I would love to be able to use 5g. I would have to believe that if the hardware supports 5G and the modem software is preventing it there must be a way to get it to work.

tensux said:
I'm on a china model in the US with the global rom installed...I would love to be able to use 5g. I would have to believe that if the hardware supports 5G and the modem software is preventing it there must be a way to get it to work.
Click to expand...
Click to collapse
Will Xiaomi Mi 11 Ultra work in USA?
In this page we are going to show you the compatibility of Xiaomi Mi 11 Ultra with the mobile networks of USA and with the telephony operators that provide service in USA.
www.kimovil.com

hassanaliyeh said:
Will Xiaomi Mi 11 Ultra work in USA?
In this page we are going to show you the compatibility of Xiaomi Mi 11 Ultra with the mobile networks of USA and with the telephony operators that provide service in USA.
www.kimovil.com
Click to expand...
Click to collapse
wow not much of a difference..im on t-mobile which uses band n41 for 5G, and I do not get 5G using a china model flashed wit a global rom. according to the chart n41 is available on all models.

tensux said:
wow not much of a difference..im on t-mobile which uses band n41 for 5G, and I do not get 5G using a china model flashed wit a global rom. according to the chart n41 is available on all models.
Click to expand...
Click to collapse
Are you on global or EU? I bet if you switch back to Chinese, you'll have it working.

hassanaliyeh said:
Are you on global or EU? I bet if you switch back to Chinese, you'll have it working.
Click to expand...
Click to collapse
i'm on global. i bet you are correct about switching back to the china version...that's why i am thinking it is a software issue which like the OP I am hoping someone can resolve.

tensux said:
i'm on global. i bet you are correct about switching back to the china version...that's why i am thinking it is a software issue which like the OP I am hoping someone can resolve.
Click to expand...
Click to collapse
Which version U r on?

hassanaliyeh said:
Which version U r on?
Click to expand...
Click to collapse
12.5.7.0 Stable

tensux said:
12.5.7.0 Stable
Click to expand...
Click to collapse
I do not have 5g where I live, so I can't answer if it's working or not.

hassanaliyeh said:
I do not have 5g where I live, so I can't answer if it's working or not.
Click to expand...
Click to collapse
i live right in Boston, the LTE speeds are as fast as 130Mbs down so its not the end of the world, but would be nice to have 5G

Jhonxs said:
Hello everyone,
Searched the forums and could not find a definitive info regarding this, apologize in advance if i missed it.
I'm soon to receive my mi 11 ultra china version.
Alltough the bands used by all the carriers in my country are all supported, i've read somewhere on the mi 11 forum that the modem settings for china are different from the global/eu rom ( at least for the mi 11 ).
Wanted to know if i flash the original global/eea rom from xiaomi via the official tool, will i also get the modem configuration from the global/eea rom ? ( Just like the global mi 11 ultra )
Cheers !
Click to expand...
Click to collapse
This is an older thread but wondering (1) did the baseband change to global after flashing the global rom? (2) Did it then pick up the band 66 (IF broadcast by your carrier in your area...not necessarily everywhere) Thanks
edit...folks are imo incorrectly focused on 5g (getting 5g or not) as its deployment is very spotty. Further if you check via signal check lite or Lte discovery apps, you will see that even if the phone shows 5G in status bar (lots of folks say they 'get' 5g based on that) the actual band is an LTE band usually (this is even with Apple iphones-have tested them out both on Tmobile and AT&T in my area...the 5G is mostly bunk imo and just marketing). ANyway, I digress. Does the flashing of global rom change the baseband to the global baseband and is the phone then able to pick up LTE 66 IF broadcast in your area?

Question Owning a Chinese version of Mi 11

What distinguishes the Global version from Chinese? is it only the system's language that intrigues people to Global version? if so, then I am good if the Chinese version fully supports English, does it? (beside the Chinese apps) I also found that Chinese version frequencies work fine in my hometown, but I have seen someone's post on Mi Community claims that Chinese Mi 11 with global ROM doesn't work on LTE-A while global Mi 11 works perfectly (https://c.mi.com/thread-3619711-1-0.html?sources=1) is it a problem related to flashing or because it's originally Chinese phone?

Kimovil.com says the same bands are in both for 2g 3g 4g and 5g