From home Press : Menu > Setting > Wireless & Network > Mobile Network > Network Mode > Select WCDMA Only
I am also using Umobile3G. It works flawless. But I am not sure your Modem version (JJ1) suitable for Umobile3G. I am using JPZ version & JM3 before. Both work flawless....
HTH.
JJ1 is the very first early generation modem file. You are probably right - flashing to JPZ or even JMF modem could be better
Hi guys,
Got my SGT back in December last year. Found it abit laggy these days, so decided to change the file system to EXT4. These were the steps I did:
1. Root SGT using zroot - done within few seconds
2. Check if bootloader is signed or not - not signed
3. Installed Titanium, made backup and copied to 8GB ext SD card.
4. Charged battery to 100%
5. Plugged in to PC (on Windows Vista, with Samsung USB drivers installed) once and wait until drivers recognized tab.
6. Put SGT into download mode
7. Flashed using Odin (p1000-mck-r3-ext4-cwm). Waited for 5 mins, then unplugged from PC. Reboot tab.
8. SGT started converting to EXT4
9. After like 20mins, menu came up with few option, I selected reboot tab.
10. SGT seems to be hanging on screen showing Samsung & Galaxy Tab (bricked?). Unable to reboot or reset using Power + Volume Up button.
11. Plug in again to PC, then flash again using Odin (p1000-mck-r3-ext4-cwm)
12. Odin says PASS, SGT reboot by itself and seems to be working fine.
13. Restored backup from Titanium, everything working fine, except only need to change timezone back to GMT+8.
14. SGT running fine for a day now w/o any hanging, etc. All apps seem to be working fine, in fact it seems to be faster than before.
Despite the initial bricking(?), you guys think I missed or did anything wrong?
I want to try again to flash to Overcome 2.0.1 Hermes for Gingerbread following
thepitbull's guide.
I'd suggest next time, if you ever wish to do this again, just flash straight to Overcome 1.6. This is a 2-in 1 solution - cahnge kernel based on ext4 and a recovery installation. The methods you listed were for those early users when Overcome rom than was still infancy stage using RFS file system