ugrade from 1.18 ->1.22?


I have my old hp49g(rom 1.18), and I want to upgrade to
1.22. Is that necessary? What will change? What is the difference between 49g and 49g+?
Thanx! :)


I don't know if such an upgrade is even possible.
Did you take a look at the feature list of the + ?
The hardware is different, the configuration may be incompatible.
Unless someone can state the opposite, I'd suggest to upgrade your 49G to ROM 1.96 or 1.97 (if available)



You cannot upgrade the 49G with 49G+ roms. The highest available for the 49G is the "unofficial" (but very stable) 1.19.6.

I have heard that there is a 1.19.7, but I have not seen it.



There were rumours the version 1.22 for the 49G could be (easily?) extracted from the 49g+ file. But would it be of
any good? I don't think so.



IMHO you would have to patch the image in various places,
since it uses some new opcodes (81Bx) which are not available in the 49G, and the compiled display offset constants are different, of course.

I don't think that it's worth the effort. People who can't live without a 49G-like calc should consider selling their 49G, and buy a 49G+. The 49G+ is better than the normal 49G in all and every aspect.

However, I'll stay with my 48GX, which is even better IMHO;-)


Possibly Related Threads...
Thread Author Replies Views Last Post
  HP 11C Batteries have lasted 22 years nink 3 758 06-23-2013, 06:51 PM
Last Post: Les Koller
  What are the most popular functions? (Poll until 18.12.) Walter B 62 4,368 12-18-2012, 08:18 AM
Last Post: Walter B
  [WP-34s] 30b for 18,99€ in Germany Alexander Oestert 9 1,267 02-10-2012, 01:32 PM
Last Post: Hubert Weikert
  WP 34S Version 1.18 Gerry Schultz 11 1,327 06-06-2011, 02:19 AM
Last Post: Marcus von Cube, Germany
  wp34s Version 1.18 Rev 875 Backup and Restore Jeff O. 17 1,907 05-12-2011, 05:39 AM
Last Post: Walter B
  Woodstock HP-22 calculators for repair Xavier A. (Brazil) 1 481 02-13-2011, 08:35 AM
Last Post: Xavier A. (Brazil)
  HP-22 brummybird 9 1,278 02-10-2011, 10:07 PM
Last Post: db (martinez, ca.)
  Happy day - Triple speed 15C - after 22 years Lyuka 15 1,733 10-22-2009, 08:57 PM
Last Post: Lyuka
  Emu48 v1.49 / Emu48PCC 1.18 released Christoph Giesselink 0 376 08-18-2009, 04:17 PM
Last Post: Christoph Giesselink
  HP 22 recharable batteries Jeff Edberg 1 460 07-28-2008, 01:28 AM
Last Post: Joel Setton (France)

Forum Jump: