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http://www.alegrecompra.com/blog/como-instalar-twrp-multi-lenguaje-rom-y-root-al-xiaomi-redmi-4a-rolex/ As easy as a google search....

You can't. First install twrp, then flash rom. And please avoid making these nonsense threads

I dont know the procedure, i have never had to build one, but the tutorials should tell you.

Qualcomm phones are unbrickable to the point of no return. What you have to do now is get a deepflash cable. Search on youtube a video on how to do it and use it, there are plenty of nice tutorials on how to use them.

You couldnt unlock your bootloader because bootloader can only be officially unlocked form the China Dev ROM. Not from vendor roms. The correct procedure would have been to flash China Dev Rom from EDL mode and MiflashBeta and then from there unlock the bootloader and install TWRP and whatever...

On mine I only hear a little bit pop/crackling on maximum speaker level

We all have this problem. It is called distortion and happens on the max volume level. All redmi 4/pro models have this.

I am on 6.12.1 and I have network on microsim. Try to see if you lost the IMEI1 which should be the one for the microsim slot.

I think OP is referring to the QR/Document scanner app...

Does someone know what that actually does apart from enabling the documents app permanently?

I have faced it too however I never came to the conclusion that it was because of rooting it. I just connected it to the PC sometimes and it just wouldnt detect it as a PC, the phone would just charge itself as if it was a normal charger. No option to switch on MTP. So just turn on USB debugging...

Bump!

Well the thread title mostly says it all. The documents app is disabled on all ROMs, china dev, and xiaomi.eu (I have a Redmi4Pro) and you need to enable it each time you need to use it because then it will redisable itself on boot. It is in charge of granting usage access to external storage...

Hello guys, today i'm going to post a little tutorial on how to enable the default bands the SD625 supports. (That doesn't mean the bands will work as some of them also depend on the modem and on the antenna of the device). This might me useful for some of you folks living in Mexico, USA, or...

Nevermind, figured out the hardway. adb shell su setprop sys.usb.config rndis,diag,adb setprop sys.usb.configfs 0 <---thats a zero, not an O

Hello, I own a Xiaomi Redmi 4 Prime on the Xiaomi.eu 6.12.1 Build. I was interested in enable the B20 band since it is disabled by default and can be done on the device, people on en.miui.com forums have already done it. The problem is that to do that I need to enable the Qualcomm Diagnostics...

Pues es verdad que si que tienes LTE seleccionado, es bastante raro eso que te pasa... Pero estoy seguro que es un error de alguna configuracion del terminal, no de un bug de la rom ya que en todas las que he estado yo que pasan desde la fake de Gearbest, china dev rom y xiaomi.eu no he tenido...

Olano es que ese no es el menu al que me refiero. Fijate en mi captura y en la tuya, no es el mismo menu. Ese es el de seleccion de red, y yo me estoy refiriendo al de seleccion de red preferente, el cual sospecho que tengas seleccionado 2G unicamente.

Olano, yo tengo mi MicroSIM de Yoigo y mi MicroSD de 128GB de SanDisk metidas, y tengo 4G en la mayoria de zonas, asi que no es eso que tu dices de que solo pille 4G la NanoSIM, ya que la mayoría de gente utiliza microsim+sd. Por favor inserta la sim en el slot de micro y pasa captura de este...

Pero ese error que me acabas de mandar en la captura es del menu de APN, no el de seleccion de red, no se si soy yo que te estoy entendiendo mal pero ese error te salta cuando eliges la red en el APN no? Yo te estoy hablando fuera del menu de apn, en el menu de sim hay un submenu que se llama...