He encontrado este mensaje en un foro de XDA Developers y os lo muestro tal cual:
"Good news guys,our Russian developer friend made a new kernel hich solve front camera problem in 4.2.2...so we have fully working 4.2.2 rom...Arushvds,soon we will get Lewa os V5 based on 4.2.2...so stay tuned...currently there is no lewa os for 4.2.2 for mt6577 cpu...
New kernel made by Qus1
Just flash through the recovery
This kernel is not for MIUI V5 4.2.2"
Por lo visto se ha caído el enlace y lo he resubido aquí:
https://mega.co.nz/#!lddRwQpL!b6DQxn...OilpMiRRogHInk
Aviso de que no lo he probado.