flashing 6943 onto a 6906 - Xperia Z1 Q&A, Help & Troubleshooting

hey guys, new to this forum. had an s2 before.
I have a Z1 C6906. My LTE network works on 1800mhz. I need to change the baseband to 6943, so my question is if this is possible?
i have been reading the forums all day trying to figure it out but i am not so clear on if this is possible?
my bootloader cannot be unlocked. Will this be a problem?
thanks for the help

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newbie question

Hey guys,
i have a newbie question. I have a Galaxy Tab 8.9 from Claro Honduras. Im pretty sure its carrier locked. Anyways if i load a custom rom, or any other ROM from another region/carrier will my 3g modem still work and be able to use my Claro sim card. Thanks in advance!

[Q] Your help and advice

Need your help to avoid damage my S3 LTE.
I have in past a Sony XPERIA and to flash room or any mods I need previous to unlock my bootloader to do that (phone was locked to carrier).
Now that I have a S3 LTE:
I need also to unlock previously S3 LTE bootloader to flash customized rooms or/and mods?
Or just to install a recovery, root and install what I want (customized room or/and mods)?
Note: my S3 is branded phone so I believe is locked to the carrier (TMN Portugal).
I really appreciate your comments and help.
Regards
Your question has been posted multiple times . Forum rules require you to search before posting .
Google <<< I9300 your search terms > xda
UNDERSTAND FIRST
http://forum.xda-developers.com/showthread.php?t=2362743
Network IMEI EFS
http://forum.xda-developers.com/showthread.php?t=2393289
Perhaps this might help too:
http://forum.xda-developers.com/wiki/Bootloader
Sent from my GT-I9305 using Tapatalk

2 questions regarding flashing firmware

hi guys i just have 2 questions regarding firmware flashing. I know i can use flash tool to update my phone to 4.3 but when i flash do i have to do any partitioning and that stuff or do i just have to put it into fast boot and flash the rom? secondly will i loose all data if i flash the phone? whoops i lied i have 3 questions does anyone have the firmware for the LTE C5306 Xperia sp Canada version, i guess thats the north american one. Thanks in advance guys

[Q] Cross flash modem Z1 C903

Hello everyone,
Do you think i can flash modem from branded french rom 14.2.A.0.290 to my actual 14.2.A.1.136 ?
'Cause I haven't got any DC,LTE or 4G.
But I've got H+ and 3G.
Thanks for future replies.

Xperia Z1 C6906 Bell Phone NEED HELP PLEASE!!

Hi there,
I'm new to these forums any help will be greatly appreciated..
I need help with rooting and installing the newset cyanogenmod on my xperia Z1
It's a c6906 from Canada orignially from Bell Mobile
The bootloader cannot be unlocked in this variant.
It came with 4.4 firmware and I upgraded through Sony to 5.0.2
I can't figure out how to bypass the boot loader access to install a custom recovey and the latest Cyanogenmod with android 5.1 or later..
sorry im a newbie
i posted a new thread by accident and i want to delete it but i cant figure out how.. :-/

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