You could have downloaded WinTesla 6.50 from our software library for free. The following versions: 6.5 and 5.3 were the most frequently downloaded ones by the program users. Commonly, this program's installer has the following filenames: STESLA.EXE and WINTESLA.EXE etc. This free program was originally designed by uCables. WinTesla lies within System Utilities, more precisely Device Assistants.
From the developer:
Wintesla is the service software package used for nokia, to test, repair, unlock, etc. all nokia phones. Wintesla have a set of libraries belong to the different nokia models. NHE-1,3,4, NHE-5,6, NHE-8,9, NHK8,9, NSE-1,3 (for nokia 5110 and 6110),NSK-1,3, NSB-3 and NSM-1.
You may want to check out more software, such as COMMUNICATE!, GX30 USB-Handset Manager or Novell® ODBC Driver For eDirectory, which might be similar to WinTesla.