OK, here is an answer to your questions in short form
Yes and No
Yes it is the current version on the Jetbook website that you can download
No there is a newer version out that can be obtained from the Ectaco website.
No at this point except for some very very minor changes the newer 34b version does not gain you anything.
There is a 34c version that I have, but the only way to install it is to upgrade to the 34b version and then upgrade to the 34c version.
No I can not see any difference between the 34b and 34c versions at all. They were only released to put technical people on the development path is all I can tell. When they release the latest version the people that have 34b and 34c may have to flash back to 33g to do the upgrade so I don't think it makes any sense for most people to go newer than what you have.
By all means please post one of your PDF files you are having problems with here or you can email it to me at
gr8npwrfloz@gmail.com and I will try it out on one of my JB and see if I have any problems with it.