AIGO EROS Q / AIGO EROS K / IRULU Surfans F20 / AGPTek H3 / HIFI WALKER H2

[dconrad]

So the Hosted port and the Native port are completely separate, and use separate builds. They install onto the SD card in the exact same way, however. You do not need to do anything about update files or flashing at all to update Rockbox.

So when you boot your player, does it go directly into Rockbox, or do you need to select between Rockbox and Hiby Player (I think that's what its called in the menu)?

I'm just trying to understand exactly what is installed on your player.

[rednakes]

So the Hosted port and the Native port are completely separate, and use separate builds. They install onto the SD card in the exact same way, however. You do not need to do anything about update files or flashing at all to update Rockbox.

So when you boot your player, does it go directly into Rockbox, or do you need to select between Rockbox and Hiby Player (I think that's what its called in the menu)?

I'm just trying to understand exactly what is installed on your player.

Sorry, I didn't notice your reply went to a new page   so I didn't reply sooner.

When I boot my player it goes directly into Rockbox.  I had installed the Native port method last week.


EDIT: OK I think I got it installed properly now.  I downloaded the link to the latest native build here:  https://download.rockbox.org/daily/erosqnative/rockbox-erosqnative.zip.  If I use the latest daily build link instead then the install gives me that earlier error.

I confirmed I have the latest by going into the Rockbox 'System' menu and 'Rockbox info', and it says I got the April 2 2025 build.

However, some of the games have not been fixed.  I still can't move around in the Space Invaders game. I can move in the Maze game though.

[vampire_duchess]

Hello all,

I need some help, today I installed on the Surfans F20 the rockbox using

https://www.rockbox.org/wiki/AIGOErosQK#Native_Port_Installation_40update_files_45_the_preferred_way_41

my surfans came with version firmware 3.0 so I used hw3 file and renamed the file to update and added the daily for the native Aigo Eros Native zip file that contains the .rockbox folder, I did the update and rebooted and rockbox was loaded but the screen is inverted.

I'm freaking out and i don't find how to fixed , I had to get a mirror and just use the buttons to read the interface. I'm screwed? what are my options to fix this or return to the native firmware? i want to use rockbox though.

[dconrad]

Hello all,

I need some help, today I installed on the Surfans F20 the rockbox using

https://www.rockbox.org/wiki/AIGOErosQK#Native_Port_Installation_40update_files_45_the_preferred_way_41

my surfans came with version firmware 3.0 so I used hw3 file and renamed the file to update and added the daily for the native Aigo Eros Native zip file that contains the .rockbox folder, I did the update and rebooted and rockbox was loaded but the screen is inverted.

I'm freaking out and i don't find how to fixed , I had to get a mirror and just use the buttons to read the interface. I'm screwed? what are my options to fix this or return to the native firmware? i want to use rockbox though.

Well, that is certainly an odd duck then. According to what we know, all Surfans F20 V3.0 units are hw3, but maybe you got a weird in-between unit with the old display. We can get that fixed one way or another.

• Just to confirm, you used this file --> https://download.rockbox.org/bootloader/aigo/native/erosqnative-hw3-erosq.upt
• And if you boot into rockbox, and, mirror in hand, go to System --> Debug --> Device Data, what does that screen say? It should have Hardware Revision, Struct Ver.,  and the raw data bytes.

We'll get to the bottom of it, and worst case scenario yeah you can always put it back and send it back if you want. But we can get it going I'm sure.

[dconrad]

So the Hosted port and the Native port are completely separate, and use separate builds. They install onto the SD card in the exact same way, however. You do not need to do anything about update files or flashing at all to update Rockbox.

So when you boot your player, does it go directly into Rockbox, or do you need to select between Rockbox and Hiby Player (I think that's what its called in the menu)?

I'm just trying to understand exactly what is installed on your player.

Sorry, I didn't notice your reply went to a new page   so I didn't reply sooner.

When I boot my player it goes directly into Rockbox.  I had installed the Native port method last week.


EDIT: OK I think I got it installed properly now.  I downloaded the link to the latest native build here:  https://download.rockbox.org/daily/erosqnative/rockbox-erosqnative.zip.  If I use the latest daily build link instead then the install gives me that earlier error.

I confirmed I have the latest by going into the Rockbox 'System' menu and 'Rockbox info', and it says I got the April 2 2025 build.

However, some of the games have not been fixed.  I still can't move around in the Space Invaders game. I can move in the Maze game though.

Ok, good to know. Glad we got that cleared up, and I'll take a look at the button mapping when I have some time.

[rednakes]

So the Hosted port and the Native port are completely separate, and use separate builds. They install onto the SD card in the exact same way, however. You do not need to do anything about update files or flashing at all to update Rockbox.

So when you boot your player, does it go directly into Rockbox, or do you need to select between Rockbox and Hiby Player (I think that's what its called in the menu)?

I'm just trying to understand exactly what is installed on your player.

Sorry, I didn't notice your reply went to a new page   so I didn't reply sooner.

When I boot my player it goes directly into Rockbox.  I had installed the Native port method last week.


EDIT: OK I think I got it installed properly now.  I downloaded the link to the latest native build here:  https://download.rockbox.org/daily/erosqnative/rockbox-erosqnative.zip.  If I use the latest daily build link instead then the install gives me that earlier error.

I confirmed I have the latest by going into the Rockbox 'System' menu and 'Rockbox info', and it says I got the April 2 2025 build.

However, some of the games have not been fixed.  I still can't move around in the Space Invaders game. I can move in the Maze game though.

Ok, good to know. Glad we got that cleared up, and I'll take a look at the button mapping when I have some time.

I appreciate your helpfulness.  BTW I also tried out Doom (wow!), and some of the buttons actually work, including going forward and changing weapons and firing.  But there is no left/right movement which I think would be best suited with the scroll wheel.

[InvictusMB]

On my H2 v1.6 Hosted installation both Duke Nukem and Quake crash the OS with a segfault. Doom works fine except for the right/left controls mentioned above.

[mrsubway]

Does anyone know of a good replacement for the Hifi Walker h2 screen protector?  Mine is coming off.  I see them on Amazon, but I don't trust them due to the reviews.

[Eepymeow]

I've been eyeing the Surfans F20, specifically the V3.4 / hw4 version for the IPS display and proper support for USB C-to-C cable. I'd rather not support amazon if possible and it's apparently not available for shipping here from ali.
Does anyone know if sunfans.net is legit, and if they are selling the most recent revision?

(I tried searching around both the forums here and a fair bit of googling and couldn't find much, but if this has come up before and I missed it I apologise in advance.)

[jkn]

Hi all - I have a general question about the line out on the Hifi Walker H2

I bought one of these devices with the intention of putting Rockbox on it. However, whilst checking out the functionality before doing this, I hit an issue.

I can use the line out jack on the H2 and play audio into the aux input on an amplifier fine. but if I use a 3.5mm to 3.5mm jack cable to connect to the Aux input on my (old) car stereo ... I cannot get any output!

I have tried with three different cables. All three work with another DAP player. There seems to be some incompatibility between the H2's Line output and my Car Stereo Aux input!!

There does seem to be some detection of 'outputs in use' in the H2 stock firmware, but I have seen no mention of similar problems elsewhere. I am about to return this H2 but I wondered (a) if this has been heard of before, and (b) if so, is it something that the rockbox FW might change?

Thanks for any thoughts, Jon N

[dconrad]

Hi all - I have a general question about the line out on the Hifi Walker H2

I bought one of these devices with the intention of putting Rockbox on it. However, whilst checking out the functionality before doing this, I hit an issue.

I can use the line out jack on the H2 and play audio into the aux input on an amplifier fine. but if I use a 3.5mm to 3.5mm jack cable to connect to the Aux input on my (old) car stereo ... I cannot get any output!

I have tried with three different cables. All three work with another DAP player. There seems to be some incompatibility between the H2's Line output and my Car Stereo Aux input!!

There does seem to be some detection of 'outputs in use' in the H2 stock firmware, but I have seen no mention of similar problems elsewhere. I am about to return this H2 but I wondered (a) if this has been heard of before, and (b) if so, is it something that the rockbox FW might change?

Thanks for any thoughts, Jon N

Your case seems a bit weird, as usually when people say the output isn't working, they are talking about using a headphone amp with the headphone output. I'm not sure what the logic in the original firmware is, but the logic the Native port uses (I can't remember what logic the Hosted port uses, probably same as original firmware) is to default to the line-out unless headphones are detected.

Sanity check of course, the amp that works isn't turned all the way up and the car stereo set to a more reasonable volume? And you made sure to turn up the volume on the player...? The original firmware seems to just treat it like a second headphone output rather than a real "line out" with a fixed volume.

Otherwise, the Native port does have the ability to manually select the output if you wish. To be honest, I'm not entirely sure what's going on with your player though. Good luck!

[jkn]

Hi, thanks a lot for replying. I appreciate that the symptom seems a bit weird.

You say

The original firmware seems to just treat it like a second headphone output rather than a real "line out" with a fixed volume.

But that is not what I see (I have FW v2.0). I can plug a pair of headphones into the line output (just for testing) and this works ... but the player volume setting has no effect. This is different from my current Rockboxed Xduoo X3ii, but seems reasonable behaviour for a line output.

The Car Stereo gain is set as high as possible.

There is some sensing going on ... if I swap which 3.5mm socket is plugged in (between h/phone and line out, for example) then playing pauses. I have no idea if there is some mechanical sensing on the socket, or some check on the loading.

I can't find any settings in the stock firmware that refer to Line Output. I am wondering if either (1) the line output is very poor and is somehow being loaded by my aux in, or (2) the stock FW is somehow wrongly detecting something about what the line out is connected to, and is taking some odd action. Both seem a bit unlikely though.
I suppose explanation (3) is: there is some problem with all three of my 3.5mm to 3.5mm TRS cables. The all work fine with the X3ii though, and the jack plug looks pretty much identical in profile. I am clutching at straws here...

BTW, a separate question: The scroll wheel on this new unit seems a bit stiff. Does it loosen up with use?

Thanks a lot, J^n

[dconrad]

They must have changed the line-out behavior in the original firmware then, because I'm pretty sure (not certain) that the volume does apply to the line output on my players. Sometimes I think people also simply don't plug in the connectors all the way and that causes issues, but I certainly don't think that's your issue. I highly doubt all three of your cables somehow don't work as well.

You can play from the headphone output to the car stereo though, right?

EDIT: What I would suspect is happening is that the car stereo has too high of an "input impedance" to be detected by the player if the output isn't already active. This is actually why we switched the Native port to use the line-out by default - headphones provide a nice (relatively) low impedance to the sensing circuit, so they're pretty easy to sense. But a quirk of the way the sensing circuit is set up is that a high input impedance device can be detected as active or removed, if the output is already active. If it's not already active, it's a crapshoot.

If you want, what you could do is test-drive the native Rockbox port and see if the hardware is fine but the original firmware is just doing something weird in your particular situation. What you would do is format your SD card to FAT32 (the original firmware can do this easily enough), put a rockbox build on the card, and then use "jztool" to temporarily load the bootloader, from which you can load into Rockbox. I would only recommend this though if you have some familiarity with command-line tools though. I can help walk you through it if you want - the instructions in wiki will of course guide you towards actually installing it to the device.

Also, yeah the scroll wheels definitely loosen up quite a bit after use.

[jkn]

Thanks for continuing this interesting discussion...

I like your idea of the car aux input impedance being too high to be detected ... except that I've just disproved it!

I looked with a 'scope at the line out (cable unconnected to anything else) and I can see 'music' waveforms. I haven't generated a sine wave .flac to check but I am pretty sure it is audio - stops when I press pause etc.

I can also confirm that the level does not change with the H2's volume controls, so as you say this must be a recent FW change.

You can play from the headphone output to the car stereo though, right?

Actually, I haven't tried that - silly me - but I will do that now. It's a way of doubly ruling out the cable(s) at least.

I am reasonably confident about installing RockBox - I am actually a SW developer amongst other things, and I have installed it on an Xduo XX and X3ii. However this involves updating the bootloader on the H2's flash doesn't it? If I end up returning the device then I would not want to have fiddled with it in that way. I couldn't find mention (in a fairly cursory read of the docs) of how to save the current bootloader and revert it afterwards; if you can point me at that I will probably try that.

Thanks for the information about the scroll wheel 

[rednakes]

You should be okay with restoring to stock bootloader.  I have v2.0 as well.  I had uploaded a stock image which will restore everything without any sign of the device having been altered previously.