Azerbaijan can purchase Western weapons from some European states, Spain, Italy and pretty much all Eastern European states do sell to Azerbaijan, its the countries such as US, Germany and France mainly have restrictions on Azerbaijan.
Slovakia presented AM-120 automated mortar system and EVA155mm SPH to Azerbaijani delegation, Azerbaijan is very interested in acquiring weapon systems from Slovakia and Slovakia also wants to set up joint production facilities in Azerbaijan
Military is going through mass modernization of Soviet equipment
all Osa AD systems will be upgraded by local Umud Technologies to Osa-MB standard
Another modernization is being done jointly with Elbit and Czech CSG group, which includes 3rd gen FCS TIFCS from Elbit, updated Kontakt-5 panels...
Some joint projects with Roketsan, credit to user Maron1918 on X
AZ-122 mm unguided rocket for MLRS with range of 40kms
Family of General Purpose Bombs - 500 LB, 1000 LB and 2000 LB bombs, Azerbaijan previously relied on Soviet style bombs but is now switching to NATO style, which are also...
Azerbaijan to modernize 23 ZSU-23-4 Shilkas jointly with CSG and Elbit, the upgrade will include a new radar system, COAPS-L from Elbit and integration of 4 Verba manpads from Russia. I believe these Shilkas were due for retirement but due to threats of UAVs are being put back into service...
Highly doubt it, South Korea refused the multi-billion dollar deal proposed by Azerbaijan, as they wanted to remain neutral between Armenia and Azerbaijan, so I highly doubt they would go ahead and damage relations for a couple hundred million from Armenia.