@Morkl,
As I now have Sony update 1.0.04.12210 on my T1 I decided to have a go at installing the
April version of modified
EbookReader using soseono's method outlined in post #259 (in a nutshell take your installer package from January, update relevant installer files using porkupan's restore-set-1.0.04.12210, use January
do_update.sh, use April
EbookReader.apk, update
chksums file accordingly)
My results are the same as soseono, i.e. the
April version works as intended and has survived several reboots on a non-rooted T1.
I see that the June
do_update.sh file is different to the January version. It is very tempting to go one step further and try to apply the June EbookReader.apk using the January do_update.sh script. However, as I don't have any idea of the implications, I'm resisting for now