The Allwinner a10Core.img.gz has been updated 20130712.
See:
http://tinycorelinux.net/5.x/armv7/Change log via git:
* tcemirror.sh: changed tcz to sce via roberts
* rc.shutdown: changed references tcz to sce via roberts
* added .profile to ensure proper X startup at login when qualified via roberts.
* ondemand: removed unsupported tcz references via roberts.
* Add option to track md5sums to enable update checking of SCE components via Jason
* tc-config: Updates pretce, httplist and tftplist to work with loadsce instead of tce-load via Gerald Clark
* loadsce: added full path suport via Gerald Clark
* .profile: added LANG=en_US.UTF8 to support default uxterm via roberts
* deb2sce: import -o fix via roberts
Files likely in your backup that have been changed:
.profile
For existing users on all Allwinner A10 platforms, simpy copy over the new uCore to your existing boot partition.