Manual Upgrade and Complete Uninstallation Guide for CLI AI Coding Tools

1. Why Manual Version Management Is Sometimes Necessary

The auto-update mechanism of CLI-based AI coding tools does reduce the barrier to entry, but it cannot cover every scenario in real engineering environments. In several situations, manual intervention is almost unavoidable:

• Offline or isolated networks: When a development machine is inside an internal network without external access, automatic package retrieval will inevitably fail.
• Version-locking requirements: When local machines, CI pipelines, and teammates need consistent behavior, automatic updates can introduce uncontrollable differences.
• Recovery from failed updates: Interrupted downloads, incomplete extraction, or occupied files during replacement can leave the program in a partially updated and unusable state.
• Compliance and audit requirements: It may be necessary to clearly record which release version is in use, who changed it, and when the change occurred.

For these reasons, it is safer to treat upgrade and uninstallation as standard operational actions rather than relying only on the tool’s built-in automation.

2. Before You Start: Locate the Installed Version, Confirm the Running Version, and Identify User Data

1. Identify the Executable That Is Actually in Use

This is one of the most easily overlooked and error-prone parts of version management. On the same machine, multiple copies may exist at the same time: one in a global installation directory, one in a user directory, one in a package-manager cache, and another left over from an earlier manual extraction. The command that is actually invoked is the first match found in the search path (PATH), not the one you assume is being used.

The correct approach is to first enumerate all matching entries, then confirm their priority:

# Example: list all matching executables in the search path on Unix-like systems
type -a codecli
# Or
which -a codecli

On desktop environments that provide a where command, it can also be used. The first line in the output is the path currently in effect.

At the same time, record the current version number as the baseline before upgrading:

codecli --version

2. Clearly Separate Program Files from User Data

These two categories should be handled very differently. Confusing them is one of the most common causes of damage during uninstallation.

Category	Typical content	Handling principle
Program files	The executable itself and runtime resources distributed with the package	Replace during upgrade; delete during uninstallation
User-level configuration	Configuration files, model access parameters, preference settings	Keep during upgrade; export if needed during uninstallation
Credentials and keys	Tokens, keys, authentication cache	Must be exported and stored separately before uninstallation
Sessions and history	Conversation records, project memory, context snapshots	Assess whether they still need to be retained before uninstallation
Caches and logs	Index caches, temporary files, runtime logs	Can be safely cleaned; often the first place to investigate when troubleshooting

Once these boundaries are clear, the upgrade action can be narrowed to “replace only the program files,” which minimizes risk.

3. Six-Step Manual Upgrade Process

Step 1: Obtain the Package from the Official Release Channel

Download only from the official release page. Do not use packages from unknown third-party mirrors. After downloading, verify integrity: official release pages usually provide checksums or digital signatures. Continue only after confirming that they match.

# Example: calculate the local file hash and compare it with the officially published value
sha256sum codecli-package.zip

A hash mismatch usually means the download was truncated or the file was tampered with. The package must be retrieved again and must never be used as-is.

Step 2: Back Up the Current Version for Rollback

Do not delete the old files directly. The recommended approach is to keep them by renaming, not by overwriting:

# Example: preserve the old version by renaming it instead of deleting it
mv codecli codecli.bak-20260511

Many tools support multiple versions side by side. After renaming, the original command may temporarily become unavailable, but this is intentional: it ensures that if something goes wrong after replacement, you can restore the previous version with one command.

Step 3: Stop All Running Instances

If this step is skipped, the replacement may fail silently or result in a partially replaced state. This includes all terminal windows with the tool open, editor plugin host processes that integrate the tool, and background index or language-service processes that may remain resident.

# Example: check whether related processes still exist
ps -ef | grep codecli

Step 4: Extract and Replace

It is recommended to extract to an independent temporary directory first, then move or rename the files, separating extraction and replacement into two atomic steps. Extracting directly inside the installation directory is risky: if the operation is interrupted, you may end up with a directory containing a mix of old and new files that is nearly impossible to repair manually.

# Example: extract to a temporary directory
unzip -o codecli-package.zip -d /tmp/codecli-new
# Example: complete replacement by renaming to preserve fast rollback capability
mv /path/to/install/codecli      /path/to/install/codecli.old
mv /tmp/codecli-new/codecli      /path/to/install/codecli

If the installation directory is in a protected system location, replacing files requires appropriate administrator privileges. This is discussed further in Section 4.

Step 5: Verify the Version and Run a Smoke Test

A correct version number is only the minimum requirement. You should also confirm that the tool is functional:

1. Check the version number and confirm that it has changed to the target version.
2. Open the help information and confirm that the subcommand structure is complete.
3. In a minimal project directory, run the simplest possible read/write or question-answering task.
4. Confirm that credentials remain valid and no re-login is required, unless the upgrade explicitly involves authentication changes.

Step 6: Clean Up After the Observation Period

After the new version has run stably for a period of time, recommended as at least one full working day of actual use, delete the backups and temporary files. Cleaning up too early removes your only rollback option.

4. Five Common Issues and How to Handle Them

1. The replacement is complete, but the version number has not changed.
There are three common causes:

• A higher-priority copy exists in the search path.
• The current shell has cached the location of the old command. Open a new terminal, or clear the command hash cache in a Unix-like shell.
• The editor is actually running its own bundled copy, which needs to be updated separately.

2. The replacement fails due to insufficient permissions.
If the installation directory is under a protected system path, normal-permission writes will be rejected. There are two solutions:

• Perform the replacement with administrator privileges.
• Use a user-level installation instead, installing into a path under the user’s home directory and placing that path ahead of the existing search path. This is more suitable for enterprise office machines where the user does not have administrator rights.

3. The new version cannot read the old configuration.
When crossing a large version range, the configuration format may migrate. The recommended order is:

• Back up the configuration file first.
• Try to let the program migrate it automatically.
• If the program fails at startup, temporarily move the configuration aside, reinitialize it, and then manually restore key fields.

4. A background process is holding the old file.
This may appear as a “file is in use” error during replacement, or the program may continue to behave according to the old logic. Locate and terminate any remaining resident processes. If necessary, restart the session.

5. The download step is blocked.
When the network is restricted, you can try the following in order:

• Use an internal enterprise private artifact repository or mirror.
• Use a download method that supports resumable transfers.
• Change the network egress or use an acceleration tool.

Regardless of which path is used, the hash must be verified again.

5. Building a Sustainable Upgrade Cadence for Frequent Releases

These tools iterate very quickly, and multiple revision releases in a single day are common. Following every release is neither necessary nor practical. It is better to handle updates according to the nature of the change:

• Security fixes: These should be upgraded promptly and are not bound by the principle of “stable means no updates.”
• Major features and breaking changes: These require assessment, including whether they affect existing workflows, whether configuration migration is required, and whether the team needs to synchronize.
• Minor defect fixes, wording changes, and prompt adjustments: These can be skipped directly, waiting until meaningful changes accumulate before upgrading once.

Therefore, skipping intermediate versions is a completely reasonable strategy. Before upgrading, review the changelog in the release notes and focus on three areas: breaking-change declarations, configuration migration requirements, and minimum runtime or dependency version requirements.

For team scenarios, it is recommended to use a combination of fixed baseline + change review + staged validation: one person first validates the new version on a non-critical project, and after confirming there are no regressions, the version is rolled out to everyone. The current baseline version number should also be recorded in internal documentation.

6. Complete Uninstallation: Clean Up Environment Variables and User Data

The goal of uninstallation is to return the environment to its pre-installation state. This is more complex than simply deleting the program. It is recommended to proceed in the following order.

1. Prepare Before Uninstalling

• Export configuration files, session records, and project memory that need to be retained.
• Confirm the ownership of licenses or subscriptions to avoid leaving personal credentials on enterprise devices.
• Notify collaborators so that others do not continue to rely on the environment without knowing it is being removed.

2. Clean Up Command Search Path Entries

In the environment variable settings, check both user variables and system variables. Remove entries added for this tool: the directory containing the executable, the dedicated configuration directory, the cache directory, and any tool-specific switch variables. After modification, open a new terminal for the changes to take effect, because already-open sessions still hold the old values.

Before deleting an entry, record its original value. If an entry is a directory shared with other software, remove only the part related to this tool, not the entire entry.

3. Delete Program Directories and User Data Directories

Follow the table in Section 2 and handle the following items one by one: the program installation directory, the user-level configuration directory, the global configuration location, cache and log directories, and temporary-file directories. These locations are often scattered across different levels and are easy to miss. Before deleting cache directories, close all related processes to avoid file locks.

4. Remove Package Manager Installation Records

If the tool was originally installed through a package manager, directly deleting files will leave “ghost records”: later queries may still show it as installed, and reinstalling may fail because of residual metadata. The correct approach is to use the package manager’s own uninstallation process, then confirm that configuration directories have also been removed.

5. Disable Autostart and Scheduled Tasks

Check startup items, scheduled tasks, and any registered resident services. These residuals may not be visible during normal use, but they can continue consuming resources and may even conflict with a newly installed version.

6. Handle Editor and Integration-Layer Residue

Editor plugins, language-service extensions, and command-completion scripts are usually installed separately. Uninstall the plugins individually, and check shell initialization files for content injected for the tool: search-path export statements, command aliases, and completion-script references. After removal, reload the shell configuration.

7. Post-Uninstallation Verification Checklist

• Open a new terminal and run the original command; it should report that the command cannot be found.
• Search the system or common locations by file name and directory name to confirm there are no residual files.
• Check the environment variable list to confirm that all related entries have been removed and that existing entries were not accidentally deleted.
• If other similar tools remain in the environment, verify that their availability has not been broken.

7. Recommendations for Team and Compliance Scenarios

In multi-person collaboration or enterprise environments, version management should be treated as a process issue:

1. Unified baseline: Fix the recommended version in internal documentation, and include verification steps in the onboarding checklist for new environments.
2. Internal mirror: In restricted network environments, build a private artifact repository. This solves download stability and makes all downloads auditable.
3. Least-privilege credentials: Store tokens and keys separately, rotate them regularly, and include them in the cleanup process when devices are reassigned or recovered.
4. Change records: Record the upgrade time, original version, target version, verification conclusion, and rollback method. This makes it easier to quickly identify which change introduced a problem.

By following the four principles of backup first, atomic stepwise replacement, closed-loop verification, and rollback capability, you can complete both upgrades and uninstallations without relying on the tool’s built-in automation, while maintaining full control over the local environment.