You need to change your theme to load the flash theme from your phone.
In your theme, you have to add in a line to lead the theme to search for the flash theme menu.

I didn't own a W850i. And your wait for camera driver will be eternity. Trust me, no people will mod it.

Why not ? Go ahead. It will automatic update to R1KG001.

I update my modded K800i but nothing wrong with that

Since when I give you acoustic file

Anyway, I didn't use any acoustic driver as I'm satisfy with the original sound itself.

That's a guide I show you. Not I give you

Anyway, you can always ask question there. I believe, Mr Shiney, ybtan and etc can help you in acoustic driver issue

Yes. It's possible. The way of changing it should be the same with K800i

^
You need a guide from here.

Actually W850i original acoustic driver already loud enough.

Sorry. Wrong link
Should be this one : here.

Which page ? You mean the modding thread ?
If so, then it isn't the original driver.

Modding page driver is modded acoustic mate

Firmware problem I assume. Head back to your respective warranty company and have a check.

Back up phone date can be done with MyPhoneExplorer. Download link at here.

Since you say that no one can confirm, then why bother ask it at here ?

It is a third party software. So ?

It can backup SMS, contacts and even dialed, missed and received call.

It will back up into a single file. Just download and install it. Then run it. That's all

You have to pay to SESC if you want to bring your phone there to replace with APAC firmware. Some of the SESC won't entertain you even you're willing to fork out the cash for firmware reflash as your phone is an AP set.

Because you're locked to the telco firmware (if not mistaken, that's a Singapore W850i right ? ) and you only update to the telco firmware which is still the same thing but major update in other not change the function to Menu.

CDA key of the firmware show that you're a firmware that's under respective telco so the SEUS will follow and update to the same telco firmware.

I hope you get what I mean

Yes. It will only update back to the setting of the telco.

Singapore set right ? Starhub phone ?

Can. Have a firmware reflash at local phone shop. You need to pay tho.

It's firmware for Starhub's Singapore phone.
So, have to reflash the firmware to take off the Ideas and have the menu button back at there