6.4.0-RC Firmware for Prusa CORE One
Summary
- New features
- Nozzle cleaning failed wizard
- Fixes
- Fix #4816
This is the release candidate for the upcoming firmware 6.4.0 for the Prusa CORE One, MK4S, MK4, MK3.9S and MK3.9. It reunifies the firmware development branch after the temporary split during the CORE One launch, where 6.3.x was released exclusively for CORE One and other printers remained on 6.2.x – along with bringing new features, improvements, and fixes across all platforms.
Builds for XL, MINI, MK3.5S and MK3.5 are temporarily not included due to identified issues currently under investigation.
For a complete overview of features introduced in firmware 6.4.0, users can refer to the 6.4.0-alpha release notes published earlier.
Nozzle cleaning failed wizard
The recovery process for failed nozzle cleaning has been reworked into a new step-by-step wizard. It replaces the previous purge option introduced in 6.4.0-alpha.
The wizard also includes a filament retraction step to prevent oozing before retrying the automatic cleaning sequence, increasing the chance of successful recovery.
Release notes:
https://github.com/prusa3d/Prusa-Firmware-Buddy/releases/tag/v6.4.0-RC
RE: 6.4.0-RC Firmware for Prusa CORE One
Summary
- New features
- Nozzle cleaning failed wizard
- Fixes
- Fix #4816
This is the release candidate for the upcoming firmware 6.4.0 for the Prusa CORE One, MK4S, MK4, MK3.9S and MK3.9. It reunifies the firmware development branch after the temporary split during the CORE One launch, where 6.3.x was released exclusively for CORE One and other printers remained on 6.2.x – along with bringing new features, improvements, and fixes across all platforms.
Builds for XL, MINI, MK3.5S and MK3.5 are temporarily not included due to identified issues currently under investigation.
For a complete overview of features introduced in firmware 6.4.0, users can refer to the 6.4.0-alpha release notes published earlier.
Nozzle cleaning failed wizard
The recovery process for failed nozzle cleaning has been reworked into a new step-by-step wizard. It replaces the previous purge option introduced in 6.4.0-alpha.
The wizard also includes a filament retraction step to prevent oozing before retrying the automatic cleaning sequence, increasing the chance of successful recovery.
Release notes:
https://github.com/prusa3d/Prusa-Firmware-Buddy/releases/tag/v6.4.0-RC
Straight from alpha to RC? Honestly you guys need several beta rounds. Most important issue is that many are reporting thermal runaway issues. There are also issues with PrusaConnect and homing issues that didn't exist with the 6.3.4 firmware.
RE:
Interesting, it appears that "heat absorb" (G29 G) has been turned off for PETG. I just started a print and it went straight to mesh bed level. I haven't tried this for PLA yet but so far there appear to be "fixes" that don't appear in the release notes. I'll check the commits to see for sure. In my view it's a good thing but I wonder what else is not in the release notes.
RE: 6.4.0-RC Firmware for Prusa CORE One
Interesting, it appears that "heat absorb" (G29 G) has been turned off for PETG. I just started a print and it went straight to mesh bed level. I haven't tried this for PLA yet but so far there appear to be "fixes" that don't appear in the release notes. I'll check the commits to see for sure. In my view it's a good thing but I wonder what else is not in the release notes.
OK, I retract the above. I had completely forgotten that I had added g-code to one of my nozzles to skip the "heat absorb" for PETG. Anyway, stand by my statement that an enhancement and one bug fix is pretty sparse for an alpha to release candidate promotion.
RE: 6.4.0-RC Firmware for Prusa CORE One
Cold pull not works. -> Pan Kratochvil, cold pull na 640 nebezi vobec. Pouzivam s C1 aj mmu3. Takze dam cold pull, odpojim ptfe, automaticky sa vypne mmu. Po ziadosti o pokracovanie strcim pla filament, pise Zavadeni filamentu a bezi ohrev hotendu. Po ohreve sa nedeje nic. Nezavedie filament. Mozete mu dat akurat STOP
Summary
- New features
- Nozzle cleaning failed wizard
- Fixes
- Fix #4816
This is the release candidate for the upcoming firmware 6.4.0 for the Prusa CORE One, MK4S, MK4, MK3.9S and MK3.9. It reunifies the firmware development branch after the temporary split during the CORE One launch, where 6.3.x was released exclusively for CORE One and other printers remained on 6.2.x – along with bringing new features, improvements, and fixes across all platforms.
Builds for XL, MINI, MK3.5S and MK3.5 are temporarily not included due to identified issues currently under investigation.
For a complete overview of features introduced in firmware 6.4.0, users can refer to the 6.4.0-alpha release notes published earlier.
Nozzle cleaning failed wizard
The recovery process for failed nozzle cleaning has been reworked into a new step-by-step wizard. It replaces the previous purge option introduced in 6.4.0-alpha.
The wizard also includes a filament retraction step to prevent oozing before retrying the automatic cleaning sequence, increasing the chance of successful recovery.
Release notes:
https://github.com/prusa3d/Prusa-Firmware-Buddy/releases/tag/v6.4.0-RC
RE: 6.4.0-RC Firmware for Prusa CORE One
Does it stop all the head banging
RE: 6.4.0-RC Firmware for Prusa CORE One
Does it stop all the head banging
It does a lot less head banging than before.
From the alpha release notes:
Lazier homing, more cautious calibration
RE: 6.4.0-RC Firmware for Prusa CORE One
Straight from alpha to RC? Honestly you guys need several beta rounds
Couldn't agree more. What the heck is going on with the Prusa software team? Is everyone scared so much by BL that *EVERYTHING* is being rushed through now?
Point in case: every print I made on the XL after upgrading to the RC ended up with the tool head crushing into the dock, and there are plenty reports of that on Github. And now (thankfully) the XL is taken off the release schedule for 6.4. So I can't help but wonder… did *no one* at Prusa try at least ONE print with the XL before releasing the software to the public?
Formerly known on this forum as @fuchsr -- https://foxrun3d.com/
RE:
Straight from alpha to RC? Honestly you guys need several beta rounds
Couldn't agree more. What the heck is going on with the Prusa software team? Is everyone scared so much by BL that *EVERYTHING* is being rushed through now?
As users, we have plenty of time to test it up to version 6.4.3 /s
Manager: "Has the release candidate been tested?"
Developer: "Yes, I tested it on a MK4 and no serious bugs"
Manager: "What about the Core One"
Developer: "Aren't they the same? I mean they both have a Nextruder"
Manager: "Yeah, you're right! OK, let's ship it then"
RE: 6.4.0-RC Firmware for Prusa CORE One
Hmmm ??? I have the alpha installed and no problems at all. (Doing quite a lot printing these days)
RE:
Hmmm ??? I have the alpha installed and no problems at all. (Doing quite a lot printing these days)
It's good that you are not experiencing any major issues, that is encouraging. For me and others judging by some of the bug reports, it's hasn't been entirely smooth.
The point some of us are making is that there are addressable bugs still, but they are rushing for whatever reason to get a release out the door. For example these are bugs either reported against alpha or scheduled to be fixed and yet only one has been addressed in the RC release: https://github.com/prusa3d/Prusa-Firmware-Buddy/issues?q=is%3Aissue%20state%3Aopen%20label%3Abug Of biggest issue to me is the thermal runaway some have been reporting.
Generally a release candidate is supposed to be stable with no known show stopper bugs. Alpha was only out a couple of weeks before a release was cut. That is generally not how it works in software development. I have been using alpha for a couple of weeks, and now the RC version and it has issues. I've encountered random failures and reboots with the new homing procedure. Also, PrusaConnect connectivity is not ironed out and the are various issues with the UI. Also, with a release candidate, I would expect the documentation related to new features to be available. So far, the QR codes are still pointing to the alpha release readme.md. This is all indicative of an unfinished product and the rush to get this out the door.
RE:
Interesting. Some of the changes between alpha and RC seem to be around the nozzle "cleaning" process: https://github.com/prusa3d/Prusa-Firmware-Buddy/compare/v6.4.0-alpha...v6.4.0-RC
RE: 6.4.0-RC Firmware for Prusa CORE One
I know nobody from Prusa reads this, but seriously this RC is not fit for release. I won't try screaming 'release blocker', but this has so many problems now it should be pulled for a full QA redo and bug fix round.
It just scraped the nozzle across the bed during leveling.
Because earlier it kept lowering the bed until it crashed it into the bottom and lost alignment…
RE: 6.4.0-RC Firmware for Prusa CORE One
I know nobody from Prusa reads this, but seriously this RC is not fit for release. I won't try screaming 'release blocker', but this has so many problems now it should be pulled for a full QA redo and bug fix round.
It just scraped the nozzle across the bed during leveling.Because earlier it kept lowering the bed until it crashed it into the bottom and lost alignment…
Wow. Yep... I noticed the same thing. I had some very stiff nylon I was working with that I couldn't get seated well into the extruder so I had to keep retrying the filament load. Each attempt, it would lower the bed. So I hit the reset button and did an auto-home to reset it. Otherwise, it would have crashed into the base like what happened to you.
RE: 6.4.0-RC Firmware for Prusa CORE One
Hi. We are looking at your responses here on forum and social media to check the status of the firmware. And according to your response and our internal testing we are improving the FW.
RE:
ok, let's add another bit then: I am running the alpha version and I get about once a week, upon turning on the printer, a crash. Can't reproduce it at will, my printer sofar has never crashed during prints and works rather well once started.
I will open a bug in github the next time it happens...
PS: I was surprised as well to see an alpha version with a ton of bugs open agaist it, move into RC with just a nozzle cleanup change. I installed the alpha (against my normal behaviour) to try out the new tuning process but, without any explanations on how to interpret the visuals, it turned out too complex for me to play with on a printer that is doing rather well.
RE: 6.4.0-RC Firmware for Prusa CORE One
And is this happening in the RC as well?
RE: 6.4.0-RC Firmware for Prusa CORE One
@Jan, I did not install the RC version as the reported changes do not affect anything I was experiencing, at least according the the published change log. If there were undocumented changes, may I kindly suggest you share them as well?
RE: 6.4.0-RC Firmware for Prusa CORE One
I believe the changelog is complete, but there might be parameters that are meant for one function, but influence other without anyone noticed it. That is why we will always check errors from the newest build. This is the same for other companies as when you have some issue, you need to have the latest firmware for proper diagnosis of the problem.
RE: 6.4.0-RC Firmware for Prusa CORE One
I've been an OS and embedded firmware developer for years and I fully get that any recompilation can shift things around moving/masking previous errors. That said, my day time job leaves me limited time to experiment, so I am confident that you understand me waiting for another fw drop if the RC version has pretty much zero relevant changes vs the alpha one.