updating hp 50g rom

[Gerald H]

(06-02-2018 05:56 AM)brickviking Wrote:  I found a particular version of the ROM (2.10-7) that had Bernard Parisse's interactive geometry application along with his CAS (I think), but those don't make it into 2.15. However, just about every woman and her dog have installed 2.15 by now, because of the many fixes that have been applied since 2.08. A few mad hatters amongst us have probably tried the 2.16 (if indeed they can find a way to extract it) ROM, and I've got a debug4x emulator instance that holds the first-mentioned ROM image just to experiment with the geometry application.

As previous people have said, it's usually safer to put the update files onto an SD card (assuming you've got an empty SD card with enough room for the update files) and do the update that way. You will definitely need a fresh set of batteries, you may be able to get away with plugging the calculator into the USB cable to keep it powered up while it updates, but I can't confirm this works.

(Post 238)

Being neither woman nor dog nor standard I too have kept 2.10-7 as it has the geometry application rather than Streamsmart, which I don't need & believe was never implemented.

All important changes were already in 2.10-7, so no need to update to 2.15.

The changelog that came with 2.15 follows:

Code:

Change Log
This section details changes made from version 2.00 onwards and will be updated as needed.
• Renumbered for a supported release version (C215)
• Fixed Port2 writing interrupt problem introduced last revision. (C214-2)
• Removed 49G boot loader code and ‘easter egg’ pictures from Bank0 to make room for
Streamsmart application and future enhancements. (C214)
• SIMPLIFY Fix for 1/(0.5+sqrt(1-cos(x)^2)), also fixing simplify(0.5*sin(2x)/
(0.5+sin(x))) (C210)
• Fix issue when running embedded SUM: SUM(N=0,3,SUM(M=0,N,COMB(N,M-N)) (C210)
• Fix Linear Solver when importing symbolic matrix (C210)
• Ask the user to convert the matrix to an array in the input form (C210)
• Reverse variable order for LINSOLVE to return solution in the original order (C210)
• LINSOLVE help fixed (3 stack levels returned instead of 1) (C210)
• Remove check for battery level when storing data onto flash, SD card or using IO.
(C210)
• Added new mechanism in ChooseBox menu to allow entry to create 48G style menu. Used by
EqnLibrary (C210) 
• Fix http://bugs.hpcalc.org/show_bug.cgi?id=192(C209)
• Fix http://bugs.hpcalc.org/show_bug.cgi?id=193(C209)
• Fix http://bugs.hpcalc.org/show_bug.cgi?id=206(C209)
• Fix FSEEK: (C208)
• Fix 48GX full screen choose and mini-font (C207)
• Fix (B206)
• Fix http://bugs.hpcalc.org/show_bug.cgi?id=201(B206)
• Fix http://bugs.hpcalc.org/show_bug.cgi?id=113(B205-5)
• Fix http://bugs.hpcalc.org/show_bug.cgi?id=44(B205-5)
• Fix http://bugs.hpcalc.org/show_bug.cgi?id=89(B205-5)
• Fix http://bugs.hpcalc.org/show_bug.cgi?id=115(B205-5)
• Fix http://bugs.hpcalc.org/show_bug.cgi?id=134(B205-5)
• Fix http://bugs.hpcalc.org/show_bug.cgi?id=140(B205-3)
• Fix corrupted screen when entering a multi-line command line in old Input Form (B205-1)
• Fix http://bugs.hpcalc.org/show_bug.cgi?id=96(B205-1)
• Fix http://bugs.hpcalc.org/show_bug.cgi?id=143(B205-1)
• Fix http://bugs.hpcalc.org/show_bug.cgi?id=147(B205-1)
• Fix http://bugs.hpcalc.org/show_bug.cgi?id=72(B205-1)
• Fix http://bugs.hpcalc.org/show_bug.cgi?id=84(B205-1)
• Fix http://bugs.hpcalc.org/show_bug.cgi?id=108(B205-1)
• Fix http://bugs.hpcalc.org/show_bug.cgi?id=112(B205-1)
• Fix http://bugs.hpcalc.org/show_bug.cgi?id=138(B205-1)
• Fix http://bugs.hpcalc.org/show_bug.cgi?id=145(B205-1)
• Fix http://bugs.hpcalc.org/show_bug.cgi?id=110(B205-1)
• Fix http://bugs.hpcalc.org/show_bug.cgi?id=102(B204-6)
• Fix http://bugs.hpcalc.org/show_bug.cgi?id=133(B204-6)
• Fix http://bugs.hpcalc.org/show_bug.cgi?id=141(B204-5)
• Fix http://bugs.hpcalc.org/show_bug.cgi?id=131(B204-5)
• Fix http://bugs.hpcalc.org/show_bug.cgi?id=128(B204-5)
• Fix http://bugs.hpcalc.org/show_bug.cgi?id=114(B204-5)
• Fix http://bugs.hpcalc.org/show_bug.cgi?id=111(B204-5)
• Fix http://bugs.hpcalc.org/show_bug.cgi?id=110(B204-5)
• Fix http://bugs.hpcalc.org/show_bug.cgi?id=106(B204-1)
• Fix http://bugs.hpcalc.org/show_bug.cgi?id=102(B204-1)
• anti-debouncing threshold is now by default 139ms with 20ms interrupt timer. This value
can now be controlled with ->KEYTIME (build 86)
• Fix a problem in BlankDA2 (C2.02) 
• Fix problem where Flash could get corrupted when storing a user object (B2.03-2)
• Fix variable X will be deleted during warmstart (B2.03-6)
• Export entry point MAKELIST to retrieve list of files (including from SD card) (B2.03-7)
• Fix Disp5x7 and DISPN can't use the new 80 lines screen (B2.03-8)
• Fix naming case issue when storing files on SD card (Build 85)
• Fix SD card Fat32/Fat16 access not exactly following Microsoft specification (build 85)
• Fix shift modifier key was pushed with other modifiers where it shouldn't
• Fix GBASIS bug (C-2.01)
• Fix EQW NEGNEG was wrongly deleted when first argument of + or - (C-2.01)
• Fix CLKADJ (C-2.01)