Revise the chapter around the task the new reader must complete, then trace which instructions depend on the old equipment. Preserve explanations that still apply and rebuild the steps, examples, illustrations, and prerequisites that do not. Test the full revised procedure using only the information supplied. Replacing product names is rarely enough when the underlying workflow has changed.
Define the new reader's starting conditions
Write down what equipment the revised chapter assumes, what the reader already knows, and the result they should be able to achieve. Keep this brief separate from the old chapter's wording so the new assignment is not constrained by every inherited step. Identify any capabilities that are no longer available and any new decisions the reader will need to make.
For example, a photography chapter originally written around a dedicated camera may be adapted for readers using a phone. The editorial task is not simply to exchange the device name throughout the text. Controls, accessories, and the way instructions are followed may differ. Record the specific setup you intend to explain and verify its current behavior directly where needed, rather than assuming that every device in the new group works identically.
Mark equipment-dependent passages
Read the chapter and label the parts that rely on the old setup: control names, physical actions, file handling, accessories, screenshots, and troubleshooting advice. Separate those from general explanations that remain useful. This creates a targeted revision map and helps avoid rewriting sound material merely because it appears near an obsolete instruction.
Look beyond explicit product references. A step such as "turn the ring until the image changes" may depend on a physical control even when the equipment is not named. A diagram may imply a connection or part that the new reader does not have. Review the assumptions embedded in verbs, examples, and illustrations, not only the nouns returned by a search for the old device name.

Rebuild the procedure from the actual task
Outline the new sequence using the verified setup and intended result. Identify prerequisites, decisions, and checkpoints before drafting polished prose. If the new equipment cannot perform an old step, decide whether another method serves the same purpose or whether the chapter's promise must change. Do not invent an equivalent capability merely to preserve the original sequence or avoid acknowledging a limitation.
Keep the procedure understandable for the defined reader. Explain how they can recognize that a step succeeded and what information they need before continuing. If variants exist, distinguish the supported example from alternatives that require separate verification. A chapter can provide a clear bounded method without pretending to cover every possible configuration. State that boundary honestly in the introduction and any relevant description of the book's coverage.
Replace examples and visuals as a connected set
Review worked examples, captions, screenshots, and troubleshooting notes alongside the revised instructions. An updated paragraph can still be contradicted by an old image or a result produced under the previous setup. Give each replacement asset a brief tied to the new procedure and record its source and version. Preserve the earlier assets separately so their accidental reuse is easy to detect.
Check whether the new examples teach the same underlying concept or need a different explanation. A changed control path may be a small revision, while a changed capability can alter the lesson itself. Update related chapter references and prerequisites accordingly. If another section assumes the old method has already been taught, revise that dependency instead of leaving the reader to bridge the difference without guidance.

Test and approve the revised chapter
Ask a suitable reviewer to follow the chapter using the defined equipment and only the supplied information. Record where they need an unstated assumption, cannot identify a control, or obtain a different result. Verify those observations against the actual setup and revise the instructions. Do not treat a fluent rewrite or a tool-generated summary as evidence that the procedure works for the intended reader.
Inspect the final export for image readability and the relationship between steps and their illustrations. Update the book's description or scope notes if the supported equipment or promised result changed materially, and review current KDP metadata guidance before entering revised public copy. Preserve the new brief, test record, and approved source files together. The chapter should emerge as a coherent method for the new reader, not a mixture of old assumptions and renamed equipment.
Frequently asked questions
Clear answers for this publishing decision.
Can I adapt a chapter by replacing equipment names globally?
That may locate some references, but it does not review dependent controls, capabilities, examples, or physical actions. Rebuild and test the actual task for the new setup.
Should all general explanation be rewritten too?
No. Preserve material that still supports the lesson and remains accurate. Use the dependency review to distinguish reusable explanation from instructions that rely on the old equipment.
What proves the adapted procedure is usable?
A suitable reviewer should be able to follow it under the stated conditions using the supplied information. Record and resolve missing assumptions, unclear steps, and inconsistent results before approval.
How wide does the full-wrap cover need to be, and how thick is the spine?
The cover width is back cover plus spine plus front cover plus bleed on both sides; the spine width is the final even page count multiplied by the paper-specific factor Amazon publishes, so the cover cannot be sized before the interior page count is final.
Prepare the cover in a book project