Sumsung Kies is offering a firmware upgrade to


Is this Android 2.2 or 2.1?

  • someone must know what these random letters mean. And shame on you Samsung for using letters which mean nothing to the user and not displaying the version of android which it relates to.
    – trampster
    Nov 9, 2010 at 0:38
  • Have some patience. Not everyone is on the same schedule.
    – ale
    Nov 9, 2010 at 14:18

2 Answers 2


It is a Froyo ROM, according to comments I've read around XDA.

  • Can you link to any of them? Nov 9, 2010 at 14:07
  • Edited answer to include some links.
    – Saiboogu
    Nov 9, 2010 at 15:44

As Saiboogu says JPx is a 2.2 Froyo ROM, I'm pretty sure the last released 2.1 update was JMx.

For anyone who's struggling to understand Samsung's build numbers, they seem to use a 3 letter code where the first two letters are the software version (going up in alphabetical order) and the third digit refers to a specific customization of that software version, generally network/country specific customizations change the last digit when your operator pre-saves their APN settings, boot logo, and any operator bundled apps directly into the ROM.

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