cengizkhan,
- Did you convert your T30 from MTP to UMS in the non-official way?
- There is a hidden file named T30_PURE.SYS in the root of the T30, is the 'language' parameter set to EST? (just open this file in notepad)
- There is a line "tuner = NO" in this file?
If the answer is yes to all three questions you are suffering the same problem I was experiencing.
I was happy when I converted my T30 to UMS but I did not like the fact that Iriver plus 2 and the Firmware Updater never found a new firmware. Something was not functioning as it should. The new firmware updater did not work at all, complaining about the inf file and the mtp<->ums button is missing.
After some research it shows that the firmware updater is right, there is no firmware listed in the inf file for an EST firmware without radio. I don't know if iriver forgot to add it or that the 'frankenstein firmware' is mimicking a non-existing player.
The solution is simple, I have dowloaded the new firmware with English language and now the firmware updater seems to work fine, it now shows the mtp<->ums button, the message about the inf-file is gone and it does not complain about not having internet access any more.
You can get the firmware here, unzip the hex file and place it in the root of the T30.
http://www.iriverplus.com/tools/UMS/..._ENG_UM_NO.ZIP