OpenWrt Compatibility: IPK vs APK, Firmware and Architecture

Read package evidence within its scope

The reviewed LionVPN package observations on this page describe release metadata only. Read each declared firmware, architecture, package format, channel and qualifier together. A package record is separate from real-device compatibility and runtime validation; development-source behavior is not automatically evidence for a downloaded binary.

IPK vs APK: use the package manager for your firmware

Official OpenWrt 24.10 and earlier releases use opkg with IPK packages. OpenWrt 25.12 and newer uses apk (Alpine Package Keeper) with APK packages. Here APK means the OpenWrt package format, not an Android application installer. Renaming an IPK to APK does not convert it. For a vendor fork or custom image, check that image’s documentation and installed package manager rather than guessing from a router name.

• A package is installed inside running firmware; a firmware image is used to install or upgrade the operating system.
• Do not flash an IPK or APK as a firmware image, or give a firmware image to the package manager.
• The upstream format change does not prove that a LionVPN package works on every release in either series.

Read firmware, target and package architecture separately

The firmware release identifies the OpenWrt build series. Target and subtarget describe the hardware build family: in mediatek/filogic, mediatek is the target and filogic is the subtarget. A device profile selects a particular router and firmware layout within that family. The package architecture identifies the instruction set and build variant accepted by the package manager. These fields serve different purposes and are not interchangeable.

• For example, the official Redmi AX6000 hardware entry lists mediatek/filogic and aarch64_cortex-a53. The target path and package architecture name differ.
• A generic CPU label such as ARM64 or the output of uname -m is not enough to select an OpenWrt package.
• Matching package architecture is necessary, but does not prove library ABI, kernel dependencies, device layout or VPN behavior.

Use only the read-only checks that match your image

The first command prints only the public release, target and package architecture fields from the standard OpenWrt release file. On an opkg image, inspect the accepted package architectures with opkg print-architecture; on an apk image, use apk --print-arch. Run only the command for the package manager your image provides. Missing fields or commands are a reason to consult the image documentation, not to install a different package manager.

# Public release fields only; do not share the whole file or board output
sed -n '/^DISTRIB_RELEASE=/p; /^DISTRIB_TARGET=/p; /^DISTRIB_ARCH=/p' /etc/openwrt_release

# opkg images (official OpenWrt 24.10 and earlier)
opkg print-architecture

# apk images (official OpenWrt 25.12 and newer)
apk --print-arch

An incompatible architecture error means stop and compare

Compare the complete package architecture with the package manager’s reported architecture and the instructions for the exact firmware release. Recheck the file you selected, its package format and intended release. A package for a similarly named router or another ARM variant is not a substitute. Do not override the accepted architecture list or force installation to silence the error.

Separate dependency failures from an architecture match

An accepted CPU architecture does not resolve missing libraries or incompatible kernel modules. Record the public package name and dependency error category, then check whether the repository and package were built for the installed image. Avoid mixing release and snapshot packages. Keep dependency checks enabled; a forced installation can leave software unusable or the router unable to boot. This guide does not prescribe a firmware upgrade or replacement feed as a quick fix.

Check writable space and temporary space separately

A downloaded package’s compressed size is not its installed size. Dependencies and writable filesystem changes also need space. Check available space in the writable overlay and temporary download area before attempting installation. A full overlay and a full temporary area need separate diagnosis; there is no universal free-space threshold that guarantees a successful installation.

• If your custom image uses different mount points, consult its documentation.
• Stop on insufficient space. Do not delete private configuration, authentication files or unknown packages to make room.
• Do not run a bulk package upgrade as an installation troubleshooting step.

# Read available space; these commands do not delete files
df -h /overlay /tmp

A signature error is a trust question, not an architecture error

Stop when package-manager signature verification fails. Confirm the official repository or release instructions and the expected signing key through a trusted channel. File integrity, signer identity and package-manager repository trust are separate checks. A matching SHA256 or detached release-manifest signature does not by itself authorize a package manager to trust an unsigned package. Do not disable signature verification or accept an untrusted package to bypass the error.

Keep Redmi model checks and support reports precise

Redmi AX6000 and Xiaomi AX6000 are different device names; do not choose a firmware image because AX6000 appears in both. Check the exact model and firmware layout against the official device instructions. The existing Redmi guide covers a specific setup path; it does not validate all devices with the same package architecture or establish LionVPN support on another firmware series.

• For a support report, record only the public firmware release, target/subtarget, package architecture, release filename and error category.
• Keep board output, serial numbers, MAC addresses, configuration files, complete logs, account identifiers and credentials private.
• Successful package installation is separate from sign-in, routing, DNS behavior and an actual VPN connection. None is demonstrated by these read-only checks.