Upgraded K750i firmware to latest version

(Update: the latest Sony Ericsson firmware is now: R1CA021) I upgraded my Sony Ericsson K750i to the latest firmware version last night. The new firmware, R1BC002, fixes a lot of bugs and offers several enhancements to the phone. My phone’s previous firmware, R1N035, was three releases behind and still contained bugs.

To check the firmware version of your Sony Ericsson phone, do the following (for < push the joystick to the left, for > push the joystick to the right):

I have long wanted to try updating the K750i’s firmware using the Sony Ericsson Update Service but I kept putting this off because I read forum posting after forum posting of people botching their upgrades.

Prior to the latest firmware, the K750i had an irritating bug involving the transfer of files via USB to the Memory Stick duo. Every time I transfer files to the phone’s Memory Stick, I always encounter problems. Not all the files I sent would be transferred. The easiest solution to this was to detach the Memory Stick and use a card reader.

When I read that the latest firmware fixed all issues involving USB transfer, I decided to plunge into upgrading the phone�s firmware. After all, I thought, I could just go to the Sony Ericsson service center if I botch the upgrade.

I backed up my phone’s data-contacts, messages and calendar items-using Float’s Mobile Agent. I then installed Sony Ericsson Update service. The first time I tried installing it–in a Windows XP PC–I couldn’t get pass the Follow These Instructions page. Windows XP had warned that the drivers I was using were unsigned.

I tried it using another PC, which was running Windows 2000, and the upgrade was flawless and took just 15 minutes.

Esato has a nice rundown of the enhancements and fixes of the different Sony Ericsson K750i firmware. Among the enhancements and fixes in the R1BC002 that convinced me to upgrade the firmware are:

1. Slight increase in speaker and earphone volume
2. All USB transfer issues fixed
3. Free memory is now listed in MB instead of KB
4. Photos are now taken as soon as the shutter sound is heard

By Max Limpag

Max is a journalist and blogger based in Cebu City, Philippines. He is co-founder of the journalism start-up InnoPub Media.