My DX90 with 2.1.8L0 stops during shuffle play every so often and reboots. I can´t find out which files cause that. After reboot the same file is ready to play as on last reboot. This never happened before with 2.1.5L2. Unfortunately I bought a second DX90 before 2.1.8 arrived, but don´t want to switch back to 2.1.5L2 since I like the sound characteristic of 2.1.8L0 with my T5p and CKR9. My library consists of MP3, M4a, FLAC and AIFF. After pressing "my music", I wait for about 30 seconds before a response, then if I press artist, I wait another 20 seconds, scrolling is a hit or miss, the screen is oversensitive, can´t be read in sunlight...the SW is a dilemma. I sent one of the DX90´s to Sanmigel for his mod, it arrives back any day now. If I knew 2.1.8 is such a problem I would have saved my money for something else. Should there be same SW problems in the next FW update, I will discard the DX90s and find a better product. I intended to use one on my motorbike, but having to restart the damn thing all the time during a ride is totally unsafe and misses the purpose. So, Ibasso, get to work and create something that really works, Apple seems to know how to do that - hard but true.
I see the same thing, after updating to 2.1.8L0 Never had any problems like this on previous firmware. I'll continue to use 2.1.8L0 as I want to get a feel for the SQ, as long as the problems like this happen infrequently, and I can live with the odd occurence. If it get's worse, or becomes bothersome, I suppose the answer is to switch back to 2.1.5 and wait for 2.1.8 to be fixed with a new version.
On a positive note, I am happy to see that new firmware can provide improvements to the SQ, as it gives hope that there are more improvements ahead.
I would also suggest that iBasso focus the current engineering resources on fixing up the interface problems. Let the engineers focus on that, and delay adding any more features, even if this results in some unhappiness from users. Introducing more features adds more variables, and complexity, versus working with the current feature set, and just focusing on fixing the interface issues. And if there is a choice, I believe most people will be happier with a working DAP with less features, rather than having many features, with a DAP that becomes irritating and unusable. I believe the majority of users want, and use the DX90 as a portable DAP, whose main purpose is to play music well. It is icing on the cake if it also does a good job as a desktop replacement, an audio decoder for Videos, an external DAC, etc., but that is not it's main purpose, or what it was designed for. Doing one thing really well, is preferable to doing many things not very well.
Utilizing what it can do, I am finding that using the LO to drive an external amp/speakers sounds better than using JRiver on a PC, to a Micromega MyDac as the front end. Using the same amp, just swapping between the DX90 LO, versus the MyDac LO.