yeah, and hopefully the next update will resolve the DSD issue
Make Sure Your SDCard Is FAT32, NOT ExFAT!!
1) copy update.zip to root folder of your HM901 SD card
2) have your HM901 switched off
3) hold the home button down, and power up your HM901 - do -not- let go of the home button
4) wait for the recovery logo to disappear, then let go of your home button
5) update will proceed and upon completion it'll power off
6) power up your HM901
I am confused with the instructions, because I thought the 901 was supposed to be very buggy with SDcards in FAT32 ? So why do you need a card in FAT32?
HM901 isn't buggy with either FAT32 or ExFAT for music playback. I use both without any issue.
I would guess the reason to only allow FAT32 SD card for firmware update has to do with how the firmware is written / read in firmware update procedure. Remember the firmware was developed originally in FAT32 environment and the capability to read ExFAT was an addon at a later time. It won't be surprising if the kernel is still FAT32 based, especially given ExFAT is M$'s proprietary.
Hmm.. I guess it is card by card issue? I have been getting stable result on two Sandisk 64GB SDXC TF card personally, but I have kept them both to ExFAT now because my Windows keeps wanting to format them if they were in FAT32.
Ok well it's not biggie, I can always use a FAT32 card for updates.
Based on reports I read here I thought I should just forget using my Sandisk Extreme SDXC 64GB card until I reformatted it back to exFAT, but to my surprise the HM-901 read it without any issues (even it was formatted to FAT32). However, I decided to format it back into exFAT anyway since the HM-901 reads the native format and it probably is an advantage in terms of scan time, stability etc.
I GOT IT: HOW TO GET COVER ART IN EVERY ALBUM on your HM-901!
The cover art shown isn't from reading the jpg-file in the album folder, but the image embedded in the folder - like this:
If there is no preview folder image embedded by Windows (or if you have a Mac, then by the iOS) then no cover art is shown even though there is a cover.jpg, folder.jpg or album-title.jpg image inside the folder.
First I'd like to say that now ALL my albums has cover art in the HM-901 after doing this. So this works.
To make sure the folder icon has (the correct) image, in the folder properties select optimize for pictures (and check the box that all folders within the main folder is so also). Then select big icons or preferably extra big icons in folder view, and walk through the album folders to check that the folders are updated with the cover art. If not, try renaming the folder and if this doesn't do it then make a new folder and put the files in the new one. This may be time-consuming, but it gets the job done.
I originally expected that you would need a jpg-file in each of the album folders with the audio files, but FLAC or MP3 files with cover art embedded might be enough for Windows to fetch the image and embed it in the folder icon. The picture I posted above is showing two images embedded in the folder icon: One is from the jpg-file and the other is from the image embedded in the (first) FLAC file in that folder. This makes me suspect that you actually don't need the jpg file, but will do with the embedded images in the audio files. Bottom line is that Windows finds the content of the folder and displays it in the folder icon.
The HM-901 reads the image in the folder ICON - and voila - you have cover art shown.
Well, and after the job is done, you can go back in folder properties and select optimize for music again.
It looks like you have to do it on the PC, before transfering the folders/files to the SD card, because when I do as described in the folders on the SD card, then it doesn't work...
EVEN NEWER EDIT:
It seems like you have to do it on the SD card. At least now I just transfered several albums to an empty card and had to embed the images in the folder icons on the SD card after transfring. This time it showed cover art in all albums again. And - as others has said earler - cover art embedded in mp3 is in fact shown (in each file).