hi

i just flashed my e90 scandinavian to fw 200 (indonesia) ! keyboard was messed up (scandinavian keys were not usable)!

rompatcher helps great here.

1 - copy all dir z:\resource\qwerty from fw 7.40 to secure place
2 - change device code via nss to one which allows to install fw 200
3 - use nsu or j.a.f. to update fw
4 - after restart fw 200 is installed
5 - copy qwerty from 1) to c:\ at same location
6 - start rompatcher with qwerty.rmp and voila Smile

here the patch :
; end of ChangeSwipolicyPath
SnR:sys\bin\ptiengine.dll:130000007a003a005c007200 650073006f0075007200630065005c00710077006500720074 0079005c0000001900:1
300000063003a005c007200650073006f00750072006300650 05c007100770065007200740079005c0000001900
SnR:sys\bin\ptiengine.dll:130000007a003a005c007200 650073006f0075007200630065005c00710077006500720074 0079005c0000000500:1
300000063003a005c007200650073006f00750072006300650 05c007100770065007200740079005c0000000500

ps: j.a.f. does not allow to downgrade an e90 fw from 200 to 7.4 . so be warned. nsu will allow you later to update to europaen fw if it ever comes out !

ciao

You r correct E90 cant be downgrade even using MT-Box nor JAF Box so be warned...
Unsure about the rest of FP1 or PreFP1