Here are Solution for Savvy 128/H4 and H9

[jan]

Hi

I'am search overall, and found no Infos abaut H9 Version. I tested self and found this solution:
Read Eeprom an edit your read, but make a copy to rescue your Phone, when you it destroy. Check the Adresses 0d23, 0d2b, 0d46, 0d4e, and change only value 01 to 00, is a adress not 01, do not change this adress !!!!!!. Now you must correkt the checksum at adress 0d00:
Check how many adresses you have change from 01 to 00 ( Normaly 2 Adresses ) and reduce the value from adress 0d00 at this number.
eg: You have changes 2 adresses you must reduce with - 2 eg: 8f - 2 = 8d.
go the checksum to zero try this way:
02, 01, 00, ff, fe, fd

Have tested at 20 Savvys from German D2 Network, TCD128/H4 and TCD128/H9 version.

Enjoy

Jan