how do I update riscos without starting again

Hi guys I am am trying to update Riscos without wiping my SD card and applying a new image I have copied the rom into the loader partition the thing that is foxing me is how do I update the boot sequence because if I overwrite !boot that will obviously overwrite the loader partition thanks for your help guys!

Just make sure that the !Boot you copy from EITHER has no directory or file called Loader inside it OR has a directory Loader (NOT a DOSFS file/directory image filing system) that contains inside it the new firmware and rom.

I am such a idiot! thats a really good and basic idea! thats obvious now I have read it! thanks again!

I have just looked at the !boot structure zip file and it doesnt contain the loader folder so I am lost again

As Chris H said, that’s what you want. When you install the new !Boot it’ll leave Loader alone since you haven’t supplied a replacement.

The other thing to say is that if you want to update the firmware ONLY, i.e. just the contents of !Boot.Loader (i.e. start.elf, riscos.img, bootcode.bin etc.) to give you a new ROM image, then you can look here which is a zip archive that ONLY updates the firmware.

Chris – Update 5L/U on the link you’ve provided may cause screen bank selection issues, as there was a mismatch between RISCOS and the firmware between ~Aug 2016 and Jan 29th 2017, following a firmware change.

I was seeing issues with bank selection in some games with firmware/RISCOS dated Dec 5th, which was resolved by switching to a RISCOS build after Jeffrey made changes to BCMVideo.

David – I’ve detailed the steps you need to go through in your post on JASPP.

Hopefully the different updates are self-consistent in that they contain contemporary firmware and rom. But I don’t really have many games so may not have seen the problem.

(draft) Instructions for moving from RISC OS SD14 to the development version of RISC OS

Locate and replace the existing RISCOS/IMG and perform a merge of the associated HardDisc4 !Boot directory. Also merge the Zero Pain !Boot folder that came with the new RISCOS ROM (image file) . Then replace any programs that need updating e.g. Netsurf, Package Manager, etc.

**I would recommend having another SD card as a back-up, just in case!

1. Backup !Boot and rename old image or use !CloneDisc (Piccolo systems)

2. Retrieve software from the various locations:-
RISC OS ROM and HardDisc4 images
!NetSurf
!PackMan

3. Shift-Click !Boot and open the Loader directory, replace RISCOS/IMG and update the CONFIG/TXT (see below). The other files can be updated from here.

CONFIG/TXT:

fake_vsync_isr=1
framebuffer_swap=0
gpu_mem=64
init_emmc_clock=100000000
#Read CMOS
ramfsfile=CMOS
ramfsaddr=0x508000
#Sound over HDMI cable
hdmi_drive=2
kernel=RISCOS.IMG 

4. Merge the new !Boot directory from uncompressed HardDisc4 folder. Double-click the !Boot folder, then navigate to Boot → Boot sequence → Install → Boot Merge. Follow the instruction given on the Boot Merge window and do the merge by clicking-Merge and then click-Set. Repeat the merge for the Zero Pain !Boot folder.

5. Shutdown and Restart