Acabo de encontrar la forma, y es por la vía que adelantaba y con la que estaba probando Chemariver... Lo he encontrado en XDA, mañana lo traduzco, que con el móvil es un coñazo... ;)
When you flash a different region firmware the recovery checks the build.prop for matching regions.
The relevant part is at the bottom an looks like this.
Código:
ro.product.board=U9200
ro.confg.hw_systemversion=U9200-1V100R001C185B103_SYSTEM
ro.build.display.id=U9200-1V100R001C185B103
ro.product.model=U9200
ro.product.brand=Huawei
ro.build.tags=ota-rel-keys,release-keys
ro.product.manufacturer=HUAWEI
ro.product.name=U9200
ro.product.device=hwu9200
ro.build.id=HuaweiU9200
ro.build.version.incremental=C185B103
ro.build.description=U9200-user 4.0.3 HuaweiU9200 C185B103 ota-rel-keys,release-keys
ro.build.fingerprint=Huawei/U9200/hwu9200:4.0.3/HuaweiU9200/C185B103:user/ota-rel-keys,release-keys
Here you must replace all the current build details which in this case is U9200-1V100R001C185B103 and if you want to move to U9200-1V100R001C00B226 you need to replace it with that or any of the other region build numbers.
I will add CWM flashable zip files for the different regions later.
So here the edited version.
Código:
ro.product.board=U9200
ro.confg.hw_systemversion=U9200-1V100R001C00B226_SYSTEM
ro.build.display.id=U9200-1V100R001C00B226
ro.product.model=U9200
ro.product.brand=Huawei
ro.build.tags=ota-rel-keys,release-keys
ro.product.manufacturer=HUAWEI
ro.product.name=U9200
ro.product.device=hwu9200
ro.build.id=HuaweiU9200
ro.build.version.incremental=C00B226
ro.build.description=U9200-user 4.0.3 HuaweiU9200 C00B226 ota-rel-keys,release-keys
ro.build.fingerprint=Huawei/U9200/hwu9200:4.0.3/HuaweiU9200C00B226:user/ota-rel-keys,release-keys
Now with that done you need to flash the recovery.img from the build you want to move to.
I will supply the recovery.img files later.
I've put some recovery.img in some of the packages. But will upload them separately later when I've extracted them all.
Now this is very similar to what you did when rooting.
Step 1:
Do a reboot to bootloader again by typing:
ADB reboot bootloader
Step 2:
Check the device is there by typing:
Fastboot devices
Step 3:
Flash the recovery by typing:
Fastboot flash recovery recovery.img (the recovery name can vary)
Step 4:
Type:
Fastboot reboot
Let it boot up and then go to:
Settings->Storage->Software Upgrade->SD card Upgrade->Confirm->Upgrade
This will erase all apps and settings, so remember to backup your stuff.
There is also a force upgrade mode which you can enter by holding down Volume Up and Volume Down keys right after the vibration when the device boots up.
Lo dicho, aunque está claro,.mañana lo traduzco...