It seems that the LATEST firmware for that phone as of September 22nd 2006 is the R533_G_11.10.29R and it seems to be a rehash of the E680 in terms of software in it. This is revealed by the fact that the phone runs Opera 8.00 (while some newer firmware versions for the much older A780 model now carry Opera 8.50).

Here are the browser user agents that I found on the net about this phone (from various Motorola/China-Mobile testers who have this phone and used it to access the net):

MOT-E690/1.0/R533_G_11.10.29R Mozilla/4.0 (compatible; MSIE 6.0; Linux; Motorola E690; 781) Profile/MIDP-2.0 Configuration/CLDC-1.1 Opera 8.00 [en]

MOT-E690/1.0/R533_G_11.10.16R Mozilla/4.0 (compatible; MSIE 6.0; Linux; Motorola E690; 781) Profile/MIDP-2.0 Configuration/CLDC-1.1 Opera 8.00 [zh-cn]

MOT-E690/1.0/R533_G_11.10.26R Mozilla/4.0 (compatible; MSIE 6.0; Linux; Motorola E690; 781) Profile/MIDP-2.0 Configuration/CLDC-1.1 Opera 8.00 [en]

Mozilla/4.0 (compatible; MSIE 6.0; Linux; Motorola E690; 781) MOT-A1200/R532C2_G_11.30.04I Profile/MIDP-2.0 Configuration/CLDC-1.1 Opera 8.00 [zh-cn]

Mozilla/4.0 (compatible; MSIE 6.0; Linux; Motorola E690; 781) MOT-E690/R533_G_11.10.16R Profile/MIDP-2.0 Configuration/CLDC-1.1 Opera 8.00 [zh-cn]